Rare case of mantle cell lymphoma of the lacrimal sac

ABSTRACT Mantle cell lymphoma of the ocular and periorbital regions is extremely rare but should be considered in the differential diagnosis of lesions affecting the periorbital tissues. In this study, we present a rare case of mantle cell lymphoma of the lacrimal sac in a 65-year-old male presenting with a mass in the lacrimal sac region and epiphora. After clinical examinations and imaging studies, the mucocele was misdiagnosed. Considering the unexpected findings during external dacryocystorhinostomy, a frozen biopsy was performed, which confirmed the diagnosis of lymphoma.

Nursing care regarding the psycho-emotional aspects of women submitted to mastectomy / Assistência de enfermagem frente aos aspectos psicoemocionais de mulheres mastectomizadas

Breast cancer, or breast neoplasm, is one of the most frequent types of cancer, and one of the most prevalent among women. The diagnosis and specific treatments, such as mastectomy surgery, lead women to experience different feelings, with the most predominant negative thoughts. In this way, the objective of this study is to describe the importance of nursing care in the face of the psycho-emotional aspects of women after mastectomy. This is an integrative literature review study, developed in electronic Medline and Lilacs databases. The following terms were used: Breast neoplasm; Nursing; Emotions; Mastectomy. A total of 2,314 articles were found, of which eight were selected. The results and discussions were divided into two thematic axes: The first deals with the emotions of women after mastectomy, whose feelings arising from the diagnosis of the disease start to affect different areas, such as personality, sexuality, family, and social relationships. Furthermore, the second deals with nursing care after mastectomy, which must be conducted integrally, aiming at restoring physical and emotional health. Nursing is the vehicle capable of planning and collaborating with these women, promoting humanized treatment and assistance, oriented and aimed at a better quality of life, and stimulating self-help, self-esteem, and acceptance of their body.

O câncer de mama ou neoplasia da mama, é um dos tipos de cânceres mais frequentes, e um dos mais prevalentes entre as mulheres. O diagnóstico e determinados tratamentos, como a cirurgia de mastectomia, levam as mulheres a vivenciarem diferentes sentimentos, sendo os pensamentos negativos os mais predominantes. Desta maneira, o objetivo deste estudo é descrever a importância da assistência do enfermeiro frente aos aspectos psicoemocionais de mulheres mastectomizadas. Trata-se de um estudo de revisão integrativa da literatura, desenvolvida nas bases eletrônicas de dados Medline e Lilacs. Foram utilizados os seguintes descritores: Neoplasias da mama; Enfermagem; Emoções; Mastectomia. Foram encontrados 2314 artigos, dos quais foram selecionados oito. Os resultados e discussões foram divididos em dois eixos temáticos: O primeiro trata das emoções das mulheres mastectomizadas, cujos sentimentos advindos com o diagnóstico da doença passam a afetar diferentes aspectos psicoemocionais, como personalidade, sexualidade, família e relações sociais. E o segundo trata da assistência de enfermagem após a mastectomia, a qual deve se dar de maneira integral, visando tanto o restabelecimento da saúde física quanto emocional. A enfermagem pode desempenhar um cuidado diferenciado e voltado para as necessidades psicoemocionais das mulheres, promovendo tratamento e assistência humanizados, orientados e voltados a uma melhor qualidade de vida, e com o fim de estimular a autoajuda, a autoestima e a aceitação de seu corpo.

Barreras y facilitadores del acceso al tamizaje de cáncer colorrectal / Barriers and facilitators of colorectal cancer screening access

Resumen Introducción : El cáncer colorrectal (CCR) es un pro blema de salud a nivel global. En el sector público de Bahía Blanca, el tamizaje de CCR es oportunista, por solicitud de sangre oculta en materia fecal (SOMF). El objetivo de este trabajo es describir el acceso al tamiza je de CCR de la población con cobertura pública exclu siva que reside en el área programática 2 de la ciudad entre 2019 y 2021, y relevar las barreras y facilitadores que lo determinan. Métodos : Se estimó la tasa de uso anual y acumula da de SOMF. Las barreras y facilitadores se relevaron a través de 41 entrevistas individuales semi-estructuradas al personal de salud del área programática, el Hospital Municipal, Secretaría de Salud y usuarios/no usuarios del sistema. Resultados : La tasa acumulada de uso de SOMF en el período fue 4.8%. Entre las barreras al tamizaje per cibidas se destacan: la dificultad en el acceso a estudios de mayor complejidad para pacientes con SOMF+, el desconocimiento y falta de percepción del CCR como un problema de salud por parte de la población y la baja adherencia de los profesionales a los lineamientos. La territorialidad y el vínculo de los centros de salud con la población, y la predisposición de usuarios y profesio nales a incorporar el tamizaje surgen como facilitadores del mismo. Conclusiones : El relevamiento de las barreras orien tará el diseño de estrategias adaptadas al contexto que permitan en el futuro reforzar el tamizaje.

Abstract Introduction : Colorectal cancer (CRC) is a global health problem. In the public sector of Bahía Blanca, CRC screening is opportunistic, through the request of fecal occult blood test (FOBT). The objective of this study is to describe access to CRC screening for the population with exclusive public coverage residing in the program matic area 2 of the city between 2019 and 2021, and to identify the barriers and facilitators that determine it. Methods : The annual and cumulative usage rate was estimated based on the number of patients who requested FOBT. The barriers and facilitators were studied through 41 semi-structured individual inter views to healthcare staff from the area, the Municipal Hospital, Health Secretariat and users/non-users of the system. Results : The cumulative usage rate of FOBT during the period was less than 5%. Among the perceived bar riers to screening, we found: the difficulties in accessing more complex studies for patients with positive FOBT, the lack of population awareness and perception of CRC as a health problem, the low adherence of professionals to guidelines. The territoriality and link of health centers with the population, as well as the willingness of users and professionals to incorporate screening, emerge as facilitators. Conclusion : The identification of barriers and facilita tors will allow the design of context-adapted strategies that will strengthen screening in the future.

Colgajos libres para reconstrucción de cabeza y cuello: experiencia de un centro oncológico chileno

Objetivo: eportar nuestra experiencia en la reconstrucción de pacientes con tumores de cabeza y cuello. Materiales y Métodos: Revisión retrospectiva de fichas clínicas de los pacientes sometidos a reconstrucciones con colgajos microquirúrgicos entre los años 2007 y 2020 en la Fundación Arturo López Pérez. Resultados: En este período 186 cirugías fueron realizadas, lo que correspondió a 173 pacientes, la mediana de edad fue de 59 años, 55% eran hombres. 29% correspondieron a rescates quirúrgicos. Al diagnóstico 110 (54%) tenían una enfermedad localmente avanzada (T3-T4). El sitio anatómico más frecuentemente reconstruido fue la cavidad oral, 83(45%). La histología más frecuente fue el carcinoma escamoso. Los colgajos más utilizados fueron el osteocutáneo de peroné, anterolateral de muslo (ALT) y antebraquial. La sobrevida global a 5 años fue 44,3%, con amplia variabilidad entre las distintas histologías. Discusión: En el análisis de nuestros resultados en dos períodos de siete años (2007-2013 y 2014-2020), el porcentaje de falla de colgajo disminuyó (10% versus 2,6%; p = 0,012); al igual que la estadía hospitalaria que disminuyó (de una mediana de 23 días a 18 días; p = 0,041). El uso del colgajo ALT aumentó de 14% a 29%, esto último aprovechando la versatilidad del colgajo de ALT para la fabricación de múltiples paletas cutáneas, que permiten reconstrucciones más complejas. Conclusión: Las reconstrucciones microquirúrgicas en nuestra institución son una opción estandarizada, confiable y comparable con centros internacionales.

Objective: To report our experience, and success rate for head and neck reconstruction in a Chilean oncologic center. Methods: Charts were reviewed retrospectively for all patients treated surgically for head and neck tumors that needed a free flap reconstruction from 2007 to 2020. The demographics and epidemiologic variables were described. Overall survival was calculated with the Kaplan-Meier method. Results: One hundred and eighty-six operations were performed on 173 patients; the median age was 59 years, and 55% were male. Twenty-nine percent of patients required a surgical rescue. The most frequently used free flaps were the anterolateral thigh, fibula osteocutaneous, and radial forearm. A second free flap was needed in 13 patients. Five-year overall survival for the whole cohort was 44.3% and varied according to histology: 28.2% for squamous cell carcinoma and 68.9% for salivary gland histology. Discussion: In analysis of our results in two seven-year periods (2007-2013 and 2014-2020), the percentage of flaps that failed decreased (10% earlier versus 2.6% later; p =.012); the length of hospital stay declined (median 23 days earlier vs 18 days later; p =.041), and the use of anterolateral thigh flaps increased 14% vs 29%, taking advantage of the versatility of the anterolateral thigh flap for the fabrication of multiple skin palettes, allowing for more complex reconstructions. Conclusion: In our institution, outcomes with free flap reconstruction for head and neck were satisfactory and improved with operator experience.

Marcadores de cáncer stem cells y transición epitelio mesenquimal como factores de agresividad y progresión en pacientes jóvenes con cáncer de tiroides

El cáncer de tiroides (CT) es el primer tumor maligno en glándulas endocrinas, y se estima que al 2030 estará en el top cinco de cáncer a nivel mundial. En Chile, el CT fue incluido, recientemente, como la patología N° 82 con Garantías Explícitas de Salud, lo que implica destinar importantes recursos públicos y privados al tratamiento de pacientes con un cáncer que va en aumento en el mundo. Existen grupos de pacientes jóvenes con tumores pequeños que presentan un comportamiento clínico más agresivo desde el inicio, donde se podría adelantar la toma de decisiones. Específicamente, destaca un grupo de pacientes menores de 55 años con tumores pequeños menores de 2 cm, pero con metástasis regionales, que quedan fuera de la indicación de radioyodoterapia y podrían requerir tratamiento complementario o presentar peor evolución. Las herramientas clínicas y moleculares para guiar el tratamiento adecuado en pacientes con metástasis linfonodales son limitadas y no han sido actualizadas hasta el momento. Existen factores de tumorigenicidad y pronóstico, tales como los marcadores de Transición Epitelio-Mesenquimal (TEM) y Cáncer Stem Cells (CSC) que se han incorporado al estudio de otros tumores y recientemente en cáncer de tiroides. Actualmente estudios que relacionan TEM y CSC con CT apuntan a la descripción molecular y genética, con escasos reportes que correlacionen, clínicamente, estos hallazgos, (particularmente en subgrupos con características particulares de agresividad) y que los propongan como marcadores de tumorigenicidad y pronóstico. La descripción de estos biomarcadores en la población descrita podría facilitar la toma de decisiones en cuanto a seguimiento, terapia quirúrgica y radioyodoterapia.

Thyroid cancer (TC) is the first malignant tumor in endocrine glands, and it is estimated that by 2030 it will be in the top five cancers worldwide. In Chile, TC was recently included as pathology No. 82 with Explicit Health Guarantees, which implies allocating significant public and private resources to the treatment of patients with a cancer that is on the rise. There are groups of young patients with small tumors that present a more aggressive clinical behavior, where decision-making could be advanced. Specifically, a group of patients under 55 years of age with tumors less than 2 cm in size but with regional metastases, that lack indication for radioiodine therapy and could require complementary treatment or present a worse evolution. Clinical and molecular tools to guide appropriate treatment in patients with lymph node metastases are limited and have not been updated. There are tumorigenicity and prognostic factors, such as EpithelialMesenchymal Transition (EMT) and Cancer Stem Cells (CSC) markers that have been incorporated into the study of other tumors and recently in thyroid cancer. Studies linking EMT and CSC with TC currently point to molecular and genetic description, with few reports clinically correlating these findings (particularly in subgroups with particular characteristics of aggressiveness) and proposing them as tumorigenicity and prognosis markers. The description of these biomarkers in the described population could facilitate decision-making regarding follow-up, surgical therapy, and radioiodine therapy.

Presentación inusual de coriocarcinoma metastásico a hígado y pulmón: un reporte de caso / Unusual presentation of metastatic choriocarcinoma to liver and lung: a case report

La enfermedad trofoblástica gestacional (ETG) es un trastorno proliferativo del trofoblasto. Incluye la mola hidatidiforme, el coriocarcinoma, la mola invasiva, el tumor trofoblástico del lecho placentario y el tumor trofoblástico epitelioide. Las últimas cuatro hacen parte de la neoplasia trofoblástica gestacional, que agrupa menos del 1% de todos los tumores ginecológicos. La incidencia de la ETG puede variar, siendo aproximadamente de 1 a 3 de cada 1.000 embarazos en América del Norte y Europa. El coriocarcinoma es la forma más agresiva por su rápida invasión vascular y compromiso metastásico. Sin embargo, es un tumor muy quimiosensible con una alta tasa de respuestas y posibilidad de curación superior al 90%. Se presenta el caso de una paciente de 40 años quien ingresó al servicio de urgencias por disnea súbita secundaria a tromboembolia pulmonar y posteriormente tras el inicio de anticoagulación presentó hemoperitoneo debido a lesiones hepáticas metastásicas de un coriocarcinoma, además de compromiso metastásico pulmonar. Se presenta este caso por ser una patología poco frecuente, agresiva y con presentaciones inusuales, con el fin de mostrar la importancia de un diagnóstico y tratamiento oportuno.

Gestational trophoblastic disease (GTD) is a condition in which the trophoblast, a layer of cells surrounding the embryo, develops abnormally. GTD includes both pre-malignant and malignant pathologies, such as hydatidiform mole, choriocarcinoma, invasive mole, placental site trophoblastic tumor, and epithelioid trophoblastic tumor. Although GTD is rare, it affects about 1 to 3 out of every 1,000 pregnancies in North America and Europe. Choriocarcinoma is the most aggressive form of GTD, as it can quickly invade blood vessels and metastasize to other parts of the body. However, it is highly responsive to chemotherapy, with a cure rate of over 90%. In this case, a 40-year-old patient presented to the emergency department with sudden dyspnea due to pulmonary embolism. After starting anticoagulation therapy, she developed hemoperitoneum due to the spread of choriocarcinoma to her liver, as well as pulmonary metastases. This case is noteworthy because of its unusual presentation and aggressive nature, underscoring the importance of early diagnosis and treatment.

Tratamiento quirúrgico de las neoplasias en la glándula parótida / Surgical treatment of the neoplasmsof the parotid gland

Objetivo: Caracterizar a pacientes con diagnóstico de neoplasias en glándula parótida, según el procedimiento quirúrgico efectuado, la técnica de identificación del nervio facial, y la relación de los hallazgos patológicos definitivos con los estudios de muestreo histológico preoperatorio. Métodos: Estudio multidisciplinario, multiinstitucional, descriptivo, cuantitativo y retrospectivo de 26 pacientes con diagnóstico de neoplasias en glándula parótida entre el año 2018 al 2023. Se dividieron de acuerdo a la histología en benignas y malignas. Las distintas frecuencias fueron expresadas en número y porcentaje. Se calculó la sensibilidad y especificidad de la punción con aguja fina como prueba de muestreo histológico. Resultados: Categoría benigna: 16 pacientes (61,5% %). El resto de la serie, diez pacientes, de la categoría de tumores malignos (38,5%). La lobectomía superficial parotídea fue el procedimiento más frecuente en las neoplasias benignas (75%) y malignas (60%). La técnica anterógrada de identificación del nervio facial fue la más común. Entre 25% a 30% de parálisis temporales en ambos grupos. La sensibilidad y especificidad de la punción con aguja fina para el diagnóstico de neoplasias benignas fue de 92,3% y 50%, el porcentaje de falsos negativos de 5,8%. Conclusión: La lobectomía superficial de la glándula parótida y la técnica anterógrada representaron el procedimiento quirúrgico y la técnica de identificación del nervio facial más frecuentemente realizado en ambas categorías. La baja especificidad de la punción con aguja fina y el porcentaje de falsos negativos representaron algunas de las dificultades a afrontar para decidir la extensión del tratamiento quirúrgico(AU)

Objective: To evaluate the surgical procedure, technique identification of nerve facial and correlate the pathological findings withthe preoperative histological sampling studies, in patients with neoplasms parotid underwent surgery. Methods: Study multi-institutiona, multi-disciplinary, descriptive y quantitative of 26 patients with neoplasm parotid between the years 2018 to 2023. We divided in two categories benign and malignant. The frequency was expressed in number and percentage. It was calculated the sensibility and specificity of the fine needle puncture. Results: Category benign: 16 patients (61,5% %). Malignant, ten patients (38,5%). The lobectomy superficial was the surgical procedure more frequent in the neoplasm benign (75%) and malignant (60%). The anterograde technique of identification of nerve facial was the more common. Between 25% and 30% presents facial palsytemporal. The sensibility and specificity of the fine needle puncture were 92,3% y 50%, the percentage of false negatives was 5,8%. Conclusion: In this study the lobectomy superficial and anterograde technique were the surgical procedure and technique of identification of nerve facial more frequent in both categories. The low specificity of fine needle puncture and the percentage of false negatives were some of the difficulties to affront in the decision of the surgery exten(AU)

Resultados perioperatorios de la implementación de la resección completa del mesocolon por vía laparoscópica en cáncer de colon derecho y transverso

Introducción: La técnica de resección completa del mesocolon (RCM) en la hemicolectomía derecha consiste en la disección por planos embriológicos para lograr la resección completa del envoltorio mesocolónico, además de una ligadura vascular central (LVC) con linfadenectomía D3, que no se realiza normalmente con la técnica estándar. Esta técnica se asocia a mejores resultados de sobrevida global y libre de enfermedad que la cirugía convencional en trabajos retrospectivos. Sin embargo, no existen datos de su implementación a nivel nacional. El objetivo de este estudio es evaluar los resultados perioperatorios de la implementación del RCM en un centro universitario en nuestro medio. Materiales y Método: Estudio retrospectivo de cohorte de pacientes consecutivos sometidos a hemicolectomía derecha laparoscópica con técnica de RCM-LVC entre Enero 2022 y Junio 2023. Se recopilaron variables demográficas, perioperatorias, postoperatorias e histopatológicas. Los resultados se analizaron utilizando estadística descriptiva. Resultados: En el periodo, 29 pacientes se sometieron a RCM laparoscópica (mediana de edad 66(57-76) y 15(52%) sexo femenino). La mediana del tiempo quirúrgico fue 202,9 minutos. No hubo casos de conversión, filtración anastomótica, ni mortalidad. Hubo morbilidad en 9 casos (31%) y de estos solo 1(3,4%) fue Clavien-Dindo III (hematoma Pfannenstiel reintervenido). No hubo lesiones vasculares intraoperatorias. Mediana de hospitalización de 3 días. Doce casos (41%) eran etapa II y 8(28%) etapa III. La mediana de linfonodos resecados fue 23(18-28). Conclusión: Esta serie demuestra que la implementación de la RCM-LVC por vía laparoscópica para el tratamiento del cáncer de colon derecho y transverso es factible en centros con experiencia en cirugía colorrectal laparoscópica avanzada.

Introduction: Complete mesocolic excision (CME) consists in the dissection on embryologic planes in order to achieve a complete resection of the mesocolic envelope and performing a central vascular ligation (CVL) with a D3 lymphadenectomy which is not routinely done for standard right colectomies. CME has been associated with better overall survival and disease-free survival in comparison with conventional surgery in retrospective studies. However, there is no data on its implementation in Chile. The aim of this study is to assess the perioperative results of the implementation of CME in our center. Methods: A retrospective cohort study was conducted. Consecutive patients undergoing a laparoscopic right hemicolectomy with CME-CVL between January 2022 and June 2023 were included. Demographic, perioperative, postoperative and histopathological data were collected. Results were analyzed using descriptive statistics. Results: During the study period, 34 patients underwent CME; 29 of them underwent laparoscopic CMECVL (median age 66 (57-76) and 15 (52%) female). The median operating time was 202,9 minutes. There were no cases of conversion, anastomotic leakage or mortality. There was morbidity in 9 cases (31%) and one of these (3,4%) was a Clavien-Dindo III morbidity (reoperation due to a Pfannenstiel haematoma). There were no intraoperative vascular injuries. The median length of stay was 3 days. Twelve cases (41%) were stage II and 8(28%) stage III. The median number of lymph nodes harvested was 23(18-28). Conclusion: This series demonstrate that the implementation of laparoscopic CME-CVL for right and transverse colon cancer is feasible in centers with experience in advanced laparoscopic colorectal cancer.

Estadio, perfil biológico y tendencias de incidencia y mortalidad de cáncer de mama en Uruguay: análisis por franjas etarias / Stage, biological profile and trends in the incidence and mortality of breast cancer in Uruguay: analysis by age groups / Estágio, perfil biológico e tendências da incidência e mortalidade por cáncer de mama no Uruguai: análise por faixa etária

Introducción: el cáncer de mama es el tumor maligno más frecuente y la primera causa de muerte por cáncer en mujeres en Uruguay y en el mundo. La evidencia epidemiológica sugiere que el cáncer de mama en diferentes grupos de edades se comportaría como patologías distintas. El objetivo de este trabajo es caracterizar el cáncer de mama en Uruguay para diferentes estratos de edades. Material y método: se analizaron las tendencias temporales de la incidencia de cáncer de mama en mujeres en Uruguay en el período 2002-2019, y de la mortalidad por esta causa en 1990-2020. Para el quinquenio 2015-2019, se analiza además la distribución de estadios al diagnóstico y de perfiles biológicos (luminales, triple negativos y HER2 positivos). Se analizan tres segmentos de edades: mujeres de 20 a 44 años, de 45 a 69 y de 70 y más años. Resultados: las tasas de incidencia para el conjunto de edades se presentaron estables en el período 2002-2019, mientras que la mortalidad presenta una tendencia decreciente en el período 1990-2020. En las mujeres menores de 45 años se encuentra un aumento en la incidencia, con mortalidad que decrece hasta el 2010, seguido de una estabilización de las tasas; en las mujeres de 45 a 69 años la incidencia se mantiene estable y la mortalidad decrece; en las mayores de 70 años, la incidencia decrece mientras la mortalidad se mantiene estable. Más del 70% de los casos se diagnostican en estadios I y II. Los tumores luminales (receptores hormonales positivos, HER2 negativos) son el subtipo más frecuente para todos los grupos, la proporción de tumores con estas características aumenta con la edad, mientras decrece la proporción de HER2 positivo y triple negativo. Conclusión: en las mujeres uruguayas el cáncer de mama presenta características diferenciales para las tres franjas de edades analizadas.

Introduction: Breast cancer is the most common malignant tumor and the leading cause of cancer death in women in Uruguay and worldwide. Epidemiological evidence suggests that breast cancer in different age groups behaves as distinct pathologies. The objective of this work is to characterize breast cancer in Uruguay for different age groups. Method: Temporal trends in the incidence of breast cancer in women in Uruguay are analyzed for the period 2002-2019, along with mortality trends for this cause from 1990 to 2020. For the five-year period 2015-2019, the distribution of stages at diagnosis and biological profiles (Luminal, Triple-negative, and Her2 positive) is also analyzed. Three age segments are analyzed: women aged 20 to 44 years, 45 to 69 years, and 70 years and older. Results: The incidence rates for all age groups remained stable during the period 2002-2019, while mortality showed a decreasing trend in the period 1990-2020. In women under 45, there is an increase in incidence, with mortality decreasing until 2010, followed by a stabilization of rates; in women aged 45 to 69, incidence remains stable and mortality decreases; in those over 70, incidence decreases while mortality remains stable. More than 70% of cases are diagnosed at stages I and II. Luminal tumors (hormone receptor positive, Her2 negative) are the most frequent subtype for all age groups. The proportion of tumors with these characteristics increases with age, while the proportion of Her2 positive and triple-negative tumors decreases. Conclusions: In Uruguayan women, breast cancer presents differential characteristics for the three age groups analyzed.

Introdução: O câncer de mama é o tumor maligno mais comum e a principal causa de morte por câncer em mulheres no Uruguai e no mundo. Evidências epidemiológicas sugerem que o câncer de mama se comportaria como patologias distintas em diferentes faixas etárias. O objetivo deste trabalho é caracterizar o câncer de mama no Uruguai para diferentes faixas etárias. Materiais e Métodos: São analisadas as tendências temporais da incidência de câncer de mama em mulheres no Uruguai no período 2002-2019 e a mortalidade por esta causa no período 1990-2020. Para o quinquénio 2015-2019 são também analisadas a distribuição dos estádios ao diagnóstico e os perfis biológicos (Luminal, Triplo negativo e Her2 positivo). São analisados três segmentos etários: mulheres dos 20 aos 44 anos, dos 45 aos 69 anos e dos 70 anos ou mais. Resultados: As taxas de incidência para todas as idades permaneceram estáveis no período 2002-2019 enquanto a mortalidade apresentou tendência decrescente no período 1990-2020. Nas mulheres com menos de 45 anos verifica-se um aumento da incidência, com uma redução da mortalidade até 2010, seguida de uma estabilização das taxas; nas mulheres de 45 a 69 anos, a incidência permanece estável e a mortalidade diminui; nas pessoas com mais de 70 anos, a incidência diminui enquanto a mortalidade permanece estável. Mais de 70% dos casos são diagnosticados nos estágios I e II. Os tumores luminais (receptor hormonal positivo, Her2 negativo) são o subtipo mais comum para todos os grupos sem do que a proporção de tumores com essas características aumenta com a idade, enquanto a proporção de (Her2 positivo e triplo negativo) diminui. Conclusão: Nas mulheres uruguaias, o câncer de mama apresenta características diferenciadas para as três faixas etárias analisadas.

Tumor metastásico en tejido blando a nivel del sacro secundario a carcinoma de células claras de riñón. Reporte de caso / Metastatic tumor in soft tissue at the level of the sacrum secondary toclear cell carcinoma of the kidney. A case report

Introducción. El cáncer de riñón es la undécima neoplasia maligna más común en los Estados Unidos Mexicanos. El carcinoma de células claras de riñón (CCR) es considerado la estirpe más frecuente y representa el 2-3 % de todos los cánceres a nivel mundial. En el contexto de la enfermedad metastásica, por lo general se identifica un tumor renal primario y las metástasis se localizan en pulmón, hueso, hígado, cerebro y, raramente, en tejidos blandos. Los pacientes con metástasis a tejidos blandos no tienen síntomas en las etapas iniciales y generalmente se identifican sólo cuando las lesiones aumentan de tamaño o durante el estudio de la pieza de resección quirúrgica. Caso clínico. Se presenta el caso de una paciente en la séptima década de la vida, con una metástasis en tejidos blandos de la región sacra, de 10 años de evolución posterior a una nefrectomía secundario a CCR. Resultados. Hallazgos clínicos e imagenológicos de un tumor bien delimitado. Se realizó resección quirúrgica de la lesión, bajo anestesia regional, con extirpación completa. Conclusión. Se recomienda que los pacientes con un sitio metastásico resecable y solitario sean llevados a resección quirúrgica con márgenes libres, como fue el caso de nuestra paciente, por su fácil acceso y ser una lesión única. En el CCR, además de su tratamiento quirúrgico inicial, es indispensable una estrecha vigilancia con examen físico e imágenes transversales, para detectar la presencia de metástasis y con ello evitar tratamientos tardíos.

Introduction. Kidney cancer is the eleventh most common malignancy in the United States of Mexico. Carcinoma renal cell (CRC) is considered the most frequent type and represents 2-3% of all cancers worldwide. In the setting of metastatic disease, a primary renal tumor is usually identified, and metastases are located in the lung, bone, liver, brain, and rarely in soft tissue. Patients with soft tissue metastases do not have symptoms in the initial stages and are generally found only when the lesions increase in size or during the study of the surgical resection piece. Clinical case. In this case, we report a female patient in the seventh decade of life with a soft tissue metastasis located in the sacral region, 10 years after a nephrectomy secondary to CRC. Results. Clinical and radiological findings of a well-defined tumor. Surgical resection of the lesion is performed under regional anesthesia with complete excision. Conclusions. It is recommended that patients with a resectable and solitary metastatic site be candidates for surgical resection with free margins, as was the case with our patient due to its easy access and single lesion. In CRC, in addition to its initial surgical treatment, close surveillance with physical examination and cross-sectional images is essential to monitor the presence of metastases and thus avoid late treatments.

Radionecrosis cerebral en un adulto

Se presenta el caso clínico de un paciente de 37 años de edad con el antecedente de haber recibido radioterapia por una lesión tumoral en la región frontal derecha, el cual acudió a consulta en el Instituto de Neurología y Neurocirugía de Cuba por presentar cefalea intensa y hemiparesia izquierda. Luego de realizados los exámenes necesarios, se estableció el diagnóstico clínico-imagenológico de lesión por radionecrosis en el hemisferio contralateral, que fue corroborado en el estudio anatomopatológico una vez que se extirpó el tumor; seguidamente, se indicó inmunoterapia. La evolución del paciente fue satisfactoria, pues se logró el control de la enfermedad y la resolución de los síntomas.

The case report of a 37-year-old patient with history of having received radiotherapy due to a tumor lesion in the right frontal region is presented, who attended to the Institute of Neurology and Neurosurgery in Cuba because of intense headache and left hemiparesis. After carrying out the necessary examinations, the clinical-imaging diagnosis of a radionecrosis lesion in the contralateral hemisphere was established, which was corroborated in the pathological examination once the tumor was removed; then, immunotherapy was indicated. The patient had a favorable clinical course because the control of the disease was achieved as well as the resolution of symptoms.

Acantosis nigricans maligna y carcinoma mamario. Presentación de un caso

Las manifestaciones cutáneas de los tumores malignos comprenden un grupo de dermatosis que pueden ser marcadores de la presencia de neoplasias ocultas y permiten su diagnóstico oportuno. El objetivo de este informe es presentar las características clínicas de una acantosis nigricans asociada a carcinoma de mamario. Para ello, se describe el caso clínico de una paciente de 50 años, color de piel negro, asistida en la consulta de Dermatología del Policlínico Universitario Raúl Sánchez, por tener una placa única eritematosa localizada en la mama izquierda, acompañada de dolor, aumento de la temperatura local y máculas hipercrómicas en las axilas; así como adenopatías axilares múltiples. Los exámenes complementarios mostraron la presencia de acantosis nigricans maligna asociada a un carcinoma inflamatorio de la mama izquierda. Fue intervenida quirúrgicamente, con la consiguiente desaparición de las lesiones cutáneas, pero con un pronóstico reservado. La mayoría de los síndromes paraneoplásicos son inespecíficos; existe una necesidad urgente de sospechar una correlación entre los cambios cutáneos y la posibilidad de una neoplasia interna, por lo que es de suma importancia derivar a estos pacientes para su identificación y el diagnóstico precoz de la enfermedad de base. Esto mejoraría el pronóstico y atenuaría en gran medida las consecuencias.

The skin manifestations of malignant tumors include a group of dermatoses that can be the sign of the occult neoplasms presence and allow their timely diagnosis. The objective of this report is to present the acanthosis nigricans' clinical characteristics associated with breast carcinoma. The clinical case of a 50-years-old black-skinned patient is described, assisted in the Dermatology consultation of the Raúl Sánchez University Polyclinic, for having a single erythematous plaque located in the left breast, accompanied by pain, increased local temperature and hyperchromic macules in the armpits; as well as multiple axillary lymphadenopathy. Complementary examinations showed the presence of malignant acanthosis nigricans associated with an inflammatory carcinoma of the left breast. She underwent surgery, with the consequent disappearance of the skin lesions, but with a reserved prognosis. Most paraneoplastic syndromes are nonspecific; there is an urgent need to suspect a correlation between skin changes and the possibility of an internal neoplasia, so it is of utmost importance to refer these patients for identification and early diagnosis of the underlying disease. This would improve the prognosis and greatly mitigate the consequences.

Caracterización histológica del melanoma cutáneo en reportes de patología en la ciudad de Cali, 2016-2021 / Histological characterization of cutaneous melanoma in pathology reports in the city of Cali, 2016-2021

Introducción. El melanoma es la proliferación maligna de melanocitos asociado a un comportamiento agresivo. El objetivo de este estudio fue determinar las variables histológicas del melanoma cutáneo. Métodos. Estudio observacional retrospectivo, transversal descriptivo, realizado con reportes de patologías de pacientes con diagnóstico de melanoma cutáneo en un laboratorio de patología en Cali, Colombia, entre 2016-2021. Se incluyeron las variables edad, sexo, localización, subtipo, espesor de Breslow, ulceración, márgenes, mitosis, invasión linfovascular, neurotrofismo, regresión tumoral, nivel de Clark e infiltración tumoral por linfocitos. Resultados. Se obtuvieron 106 reportes y fueron excluidos 54 por duplicación. Se incluyeron 52 registros, la media de edad fue de 61 años, con una mayor frecuencia de mujeres (55,8 %). De los 33 casos donde se especificó el subtipo histológico, el más frecuente fue el de extensión superficial (66,6 %), seguido del acral lentiginoso (18,1 %) y nodular con (15,2 %). La localización más frecuente fue en extremidades (61,5 %). El espesor de Breslow más común fue IV (34,6 %) y el nivel de Clark más frecuente fue IV (34,6 %). La ulceración estuvo en el 40,4 %. El subtipo nodular fue el de presentación más agresiva, donde el 100 % presentaron espesor de Breslow IV. Conclusiones. El subtipo de melanoma más común en nuestra población fue el de extensión superficial; el segundo en frecuencia fue el subtipo acral lentiginoso, que se localizó siempre en extremidades. Más del 50 % de los melanomas tenían espesor de Breslow mayor o igual a III, lo que impacta en el pronóstico.

Background. Melanoma is the malignant proliferation of melanocytes associated with aggressive behavior. The objective of this study was to determine the histological variables of cutaneous melanoma. Methods. Observational, cross-sectional, descriptive, retrospective study carried out with reports of pathologies with a diagnosis of cutaneous melanoma in a pathology laboratory in Cali between 2016-2021. The variables were age, sex, location, subtype, Breslow thickness, ulceration, margins, mitosis, lymphovascular invasion, neurotropism, tumoral regression, Clark level and tumor infiltration by lymphocytes. Results. One hundred and six reports were obtained and 54 were excluded due to duplication. A descriptive analysis was made on the 52 records that were included, the mean age was 61 years, with a higher frequency in women with 55.8%. Of the 33 cases where the histological subtype was specified, the most frequent was superficial extension with 66.6%, followed by acral lentiginous with 18.1% and nodular with 15.2%. The most frequent location was in the extremities (61.5%); the most common Breslow was IV (34.6%), and the most frequent Clark was IV (34.6%). Ulceration was in 40.4%. The nodular subtype was the most aggressive presentation where 100% presented Breslow IV. Conclusions. The most common subtype of melanoma was that of superficial extension. In our population, the second most frequent was the acral lentiginous subtype, which was always located on the extremities. More than 50% of the melanomas had Breslow greater than or equal to III, which affects the prognosis.

División ganglionar posquirúrgica y su efecto en el recuento ganglionar y la estadificación en pacientes con cáncer gástrico / Postoperative lymph node division and its effect on lymph node count and staging in patients with gastric cancer

Introducción. La gastrectomía y disección ganglionar es el estándar de manejo para los pacientes con cáncer gástrico. Factores como la identificación de ganglios por el patólogo, pueden tener un impacto negativo en la estadificación y el tratamiento. El objetivo de este estudio fue comparar el recuento ganglionar de un espécimen quirúrgico después de una gastrectomía completa (grupo A) y de un espécimen con un fraccionamiento por grupos ganglionares (grupo B). Métodos. Estudio de una base de datos retrospectiva de pacientes sometidos a gastrectomía D2 en el Servicio de Cirugía gastrointestinal de la Liga Contra el Cáncer seccional Risaralda, Pereira, Colombia. Se comparó el recuento ganglionar en especímenes quirúrgicos con y sin división ganglionar por regiones anatómicas previo a su envío a patología. Resultados. De los 94 pacientes intervenidos, 65 pertenecían al grupo A y 29 pacientes al grupo B. El promedio de ganglios fue de 24,4±8,6 y 32,4±14,4 respectivamente (p=0,004). El porcentaje de pacientes con más de 15 y de 25 ganglios fue menor en el grupo A que en el grupo B (27 vs 57, p=0,432 y 19 vs 24, p=0,014). El promedio de pacientes con una relación ganglionar menor 0,2 fue mayor en el grupo B (72,4 % vs 55,4 %, p=0,119). Conclusiones. Los resultados de nuestro estudio mostraron que una división por grupos ganglionares previo a la valoración del espécimen por el servicio de patología incrementa el recuento ganglionar y permite establecer de manera certera el pronóstico de los pacientes, teniendo un impacto positivo en su estadificación, para evitar el sobretratamiento

Introduction. A gastrectomy and lymph node dissection is the standard of management for patients with gastric cancer. Factors such as the identification of nodes by the pathologist can have a negative impact on staging and treatment. The objective of this study was to compare the lymph node count of a surgical specimen after a complete gastrectomy (group A) and of a specimen with lymph node by groups (group B). Methods. Study of a retrospective database of patients undergoing D2 gastrectomy in the Risaralda section of the Liga Contra el Cancer Gastrointestinal surgical service, Pereira, Colombia. The lymph node count was compared in surgical specimens with and without lymph node division by anatomical regions, prior to sending them to pathology. Results. Of the 94 patients who underwent surgery, 65 were from group A and 29 patients were from group B. The average number of nodes was 24.4±8.6 and 32.4±14.4, respectively (p=0.004). The percentage of patients with more than 15 and 25 nodes was lower in group A than in group B (27 vs 57, p=0.432 and 19 vs 24, p=0.014). The average number of patients with a nodal ratio less than 0.2 was higher in group B (72.4% vs 55.4%, p=0.119). Conclusions. The results of our study showed that a division by lymph node groups prior to the evaluation of the specimen by the pathology service increases the lymph node count and allows the prognosis of patients to be accurately established, having a positive impact on their staging, to avoid overtreatment.

Incidence of radiodermatitis and factors associated with its severity in women with breast cancer: a cohort study

Abstract Background: One of the main adverse reactions of adjuvant radiotherapy for breast cancer is radiodermatitis. Objective: To assess the incidence of radiodermatitis in women with breast cancer, identify factors associated with its severity and determine the time at which this event occurs. Methods: Prospective cohort study in 113 women with breast cancer who were evaluated before radiotherapy and at every fifth session until the end of treatment. Logistic regression and Cox proportional regression model were used for the assessment of risk factors; P values < 0.05 were considered significant. Results: The incidence rate of radiodermatitis was 98.2% and it was demonstrated that for each additional point of the Body Mass Index (BMI), the chance of occurrence of grades II to IV radiodermatitis increases by 14% (OR = 1.14 [95% CI 1.04-1.26]; p = 0.004) and statin use increases the risk of more severe skin lesions by four-fold (OR = 4.27 [95% CI 1.11-16.42]; p = 0.035). The exclusive use of hydrogel for skin hydration was an independent factor in delaying the onset of radiodermatitis (HR = 0.55 [95% CI 0.36-0.82]; p = 0.004). Study limitations: The main limitation of this study was its external validity. The identified factors should be considered for services and populations similar to those in this study. Conclusions: There was a high incidence of radiodermatitis and its severity was related to higher BMI, statin use; there was a protective effect of hydrogel use.

Utilidad diagnóstica del CD117 en un inusual carcinoma adenoide quístico del labio superior / Diagnostic utility of CD117 in an unusual adenoid cystic carcinoma of the upper lip / Utilidade diagnóstica do CD117 num carcinoma adenoide cístico invulgar do lábio superior

RESUMEN El carcinoma adenoide quístico (CAQ) es una neoplasia maligna de glándula salival, de evolución lenta pero de agresivo comportamiento, que se presenta frecuentemente en el paladar; sin embargo, en el labio superior, donde suelen encontrarse más neoplasias benignas, su presencia es escasamente relatada. Se expone un relato de una mujer de 63 años, derivada por presentar un nódulo en el labio superior derecho, de aspecto benigno, consistencia firme, circunscrito, móvil, doloroso a la palpación, sin tiempo de evolución determinado y cuyo estudio histopatológico exhibió una proliferación de células anguladas e hipercromáticas de escaso citoplasma, organizadas en patrón cribiforme y predominantemente tubular. Se realiza un estudio inmunohistoquímico, el cual mostró positividad para SMA, p63 y CD117 con un Ki-67 del 10 % aproximadamente. Estos resultados confirman diagnóstico de CAQ con patrón tubular, destacando el rol del CD117 para el diagnóstico diferencial con adenocarcinoma polimorfo. Se deriva a la paciente para tratamiento quirúrgico y radioterapia, y luego de un año de seguimiento mantiene un buen comportamiento clínico.

ABSTRACT Adenoid cystic carcinoma (ACCC) is a malignant neoplasm of the salivary gland, of slow evolution but aggressive behavior, which frequently occurs in the palate; however, in the upper lip, where more benign neoplasms are usually found, its presence is scarcely reported. We report the case of a 63-year-old woman, referred for presenting a nodule in the right upper lip, with benign appearance, firm consistency, circumscribed, mobile, painful to palpation, with no determined time of evolution and whose histopathological study showed a proliferation of angular and hyperchromatic cells with scarce cytoplasm, organized in a cribriform pattern and predominantly tubular. An immunohistochemical study was performed, which showed positivity for SMA, p63 and CD117 with a Ki-67 of approximately 10%. These results confirm the diagnosis of CAC with tubular pattern, highlighting the role of CD117 for the differential diagnosis with polymorphous adenocarcinoma. The patient was referred for surgical treatment and radiotherapy, and after one year of follow-up she maintained a good clinical behavior.

RESUMO O carcinoma adenoide cístico (CACC) é uma neoplasia maligna da glândula salivar, de evolução lenta, mas de comportamento agressivo, que ocorre frequentemente no palato; no entanto, a sua presença é raramente relatada no lábio superior, onde normalmente se encontram neoplasias mais benignas. Relatamos o caso de uma mulher de 63 anos que foi encaminhada por apresentar um nódulo benigno no lábio superior direito, de aspeto firme, circunscrito, móvel, doloroso à palpação, sem tempo de evolução definido. O exame histopatológico revelou uma proliferação de células angulosas e hipercromáticas com citoplasma escasso, organizadas em padrão cribriforme e predominantemente tubulares. Foi efetuado um estudo imuno-histoquímico que mostrou positividade para SMA, p63 e CD117 com um Ki-67 de aproximadamente 10 %. Estes resultados confirmam o diagnóstico de CAC com padrão tubular, realçando o papel do CD117 no diagnóstico diferencial com adenocarcinoma polimorfo. A paciente foi encaminhada para tratamento cirúrgico e radioterapia e, após um ano de seguimento, manteve bom comportamento clínico.

Utilidad diagnóstica de citopatología para diagnóstico de nódulos tiroideos malignos en un hospital peruano / Diagnostic utility of cytopathology for the diagnosis of malignant thyroid nodules in a Peruvian hospital

RESUMEN Objetivos: determinar el rendimiento diagnóstico de la biopsia por punción aspiración con aguja fina (PAAF) para el diagnóstico de nódulos tiroideos malignos. Materiales y métodos: estudio retrospectivo que evaluó las PAAF de tiroides realizadas en el Hospital Nacional Guillermo Almenara Irigoyen en Lima, Perú, durante un período de tres años. Se categorizó el diagnóstico citopatológico de las biopsias usando el sistema de Bethesda, se consideró las categorías V y VI como malignas y la categoría II como benigna. Se obtuvo solo una biopsia por paciente y se consideró el resultado con la categoría de Bethesda más alta. Todos los pacientes fueron sometidos a tiroidectomía y los resultados histopatológicos se categorizaron como malignos o benignos. Resultados: se incluyó a 173 pacientes con resultados citopatológicos de Bethesda II al VI. El diagnóstico citológico mostró que el 47,4% de los pacientes tenían Bethesda VI. El 59,5% de los nódulos tiroideos fueron malignos en la histopatología, siendo el carcinoma papilar el tipo más frecuente. El rendimiento diagnóstico de la PAAF fue alta cuando considera Bethesda V y VI como malignos, con una sensibilidad 91,92%, especificidad 71,67%, valor predictivo positivo 84,26%, valor predictivo negativo 84,31% y precisión de 84,28%, razón de verosimilitud positiva 3,39; pero mejoró significativamente cuando se consideró solo Bethesda VI como maligno, con sensibilidad del 90,7%, especificidad del 89,58%, precisión 90,3% y razón de verosimilitud positiva 8,71. Conclusiones : la PAAF tiene buen rendimiento. Este estudio demostró ser de gran utilidad en nuestro centro de salud para detectar errores y promover mejoras, así también como modelo para próximas investigaciones en diferentes establecimientos de salud.

ABSTRACT Objectives: To determine the diagnostic performance of fine needle aspiration biopsy (FNAB) for diagnosing malignant thyroid nodules. Methods: This is a retrospective study that assessed thyroid FNABs in Guillermo Almenara-Irigoyen National Hospital in Lima, Peru, during a three-year period. Cytopathologic diagnosis of biopsies was categorized using the Bethesda System, considering categories V and VI as malignant, and category II as benign. A single biopsy per patient was obtained, and results with the highest value in the Bethesda System were considered. All patients underwent thyroidectomy and histopathological results were characterized as malignant or benign. Results: One hundred and seventy-three patients were included in the study. Their cytopathology results were Bethesda II to VI. Cytological diagnosis showed that 47.4% of all patients were Bethesda VI. Nearly sixty percent (59.5%) of thyroid nodules were malignant in histopathology, and papillary carcinoma was the most frequent neoplasm. Diagnostic performance of FNAB was high when considering Bethesda V and VI as malignant, with 91.92% sensitivity, 71.67% specificity, 84.26 positive predictive value, 84.31% negative predictive value, and 84.28% precision. Positive verisimilitude rate was 3.39; but this significantly improved when only Bethesda VI was considered as malignant, with 90.7% sensitivity, 89.58% specificity, 90.3% precision, and 8.71 positive verisimilitude rate. Conclusion: FNAB showed good performance. This study proved to be quite useful in our healthcare facility for detecting errors and promote improvement, as well as a model for future research in different healthcare instances.

Value of a nomogram model in early recurrence of pancreatic ductal adenocarcinoma after laparoscopic pancreaticoduodenectomy / 临床肝胆病杂志

ObjectiveTo investigate the risk factors for early tumor recurrence after laparoscopic pancreaticoduodenectomy （LPD） in patients with pancreatic ductal adenocarcinoma （PDAC）， and to establish a predictive model. MethodsA retrospective analysis was performed for the clinical data of 240 PDAC patients who underwent LPD in The First Hospital of Jilin University from April 2016 to July 2022， with early postoperative tumor recurrence （time to recurrence ≤12 months） as the study outcome. The patients were randomly divided into training group with 168 patients and validation group with 72 patients at a ratio of 7∶3. In the training group， there were 70 patients （41.67%） with early postoperative recurrence and 98 （58.33%） without early recurrence， and in the validation group， there were 32 （44.44%） with early postoperative recurrence and 40 （55.56%） without early recurrence. The chi-square test or the Fisher’s exact test was used for comparison of categorical data between groups； a logistic regression analysis was used to investigate the risk factors for early postoperative recurrence； the receiver operating characteristic （ROC） curve and the area under the ROC curve （AUC） were used to evaluate the discriminatory ability of the model， with AUC>0.75 indicating that the model had adequate discriminatory ability. The Bootstrap resampling method was used for validation after 1 000 times of random sampling， and the model was validated again in the validation group. The calibration curve and the Hosmer-Lemeshow goodness-of-fit test were used to evaluate the degree of calibration， and the decision curve analysis was used to evaluate clinical practicability. ResultsThe univariate and multivariate analyses showed that preoperative CA19-9 level≥37 U/mL （odds ratio ［OR］=6.265， 95% confidence interval ［CI］： 1.938‍ ‍—‍ ‍20.249， P<0.05）， maximum tumor diameter >3 cm （OR=10.878， 95%CI： 4.090‍ ‍—‍ ‍28.932， P<0.05）， poor tumor differentiation （OR=3.679， 95%CI： 1.435‍ ‍—‍ ‍9.433， P<0.05）， lymph node metastasis （OR=0.209， 95%CI： 0.080‍ ‍—‍ ‍0.551， P<0.05）， and absence of adjuvant chemotherapy after surgery （OR=0.167， 95%CI： 0.058‍ ‍—‍ ‍0.480， P<0.05）. A nomogram model was constructed based on these factors； the ROC curve analysis showed that the model had an AUC of 0.895 （95%CI： 0.846‍ ‍—‍ ‍0.943， P<0.001）， and the calibration curve and the Hosmer-Lemeshow test showed that the model had a good degree of calibration （P=0.173）. The decision curve analysis showed that the nomogram had a good clinical application value. ConclusionPreoperative CA19-9 level ≥37 U/mL， maximum tumor diameter >3 cm， poor tumor differentiation， lymph node metastasis， and absence of adjuvant chemotherapy after surgery are independent risk factors for the early recurrence of PDAC after LPD， and the nomogram model established based on these factors can effectively predict early postoperative recurrence.

Effect of chelerythrine on migration,invasion,and epithelial-mesenchymal transition of human ovarian cancer SKOV3 cells / 吉林大学学报(医学版)

Objective:To discuss the inhibitory effect of chelerythrine(CHE)on the migration,invasion,and epithelial-mesenchymal transition(EMT)of the human ovarian cancer SKOV3 cells,and to clarify the associated mechanism.Methods:The SKOV3 cells were cultured in vitro and divided into control group and 2.5,5.0,10.0,20.0,and 40.0 μmol·L-1 CHE groups.Methylthiazolydiphenyl-tetrazolium(MTT)assay was used to detect the inhibitory rates of proliferation of the cells in various groups.The SKOV3 cells were cultured in vitro and divided into control group,transforming growth factor-β1(TGF-β1)group,TGF-β1+5 μmol·L-1 CHE group,and TGF-β1+10 μmol·L-1 CHE group.Cell scratch assay was used to detect the migration rates of the cells in various groups;Transwell chamber assay was used to detect the numbers of migration and invasion cells in various groups;Western blotting method was used to detect the expression levels of E-cadherin,N-cadherin,and Vimentin proteins in the cells in various groups;immunofluorescence staining method was used to detect the fluorescence intensities of E-cadherin and N-cadherin in the cells in various groups.Results:The MTT assay results showed that compared with control group,the inhibitory rates of proliferation of the cells in 5.0,10.0,20.0,and 40.0 μmol·L-1 CHE groups were significantly increased(P<0.05 or P<0.01).The cell scratch assay results showed that compared with control group,the migration rate of the cells in TGF-β1 group was increased(P<0.01);compared with TGF-β1 group,the migration rates of the cells in TGF-β1+5 μmol·L-1 CHE group and TGF-β1+10 μmol·L-1 CHE group were significantly decreased(P<0.01).The Transwell chamber assay results showed that compared with control group,the numbers of migration and invasion cells in TGF-β1 group were significantly increased(P<0.05);compared with TGF-β1 group,the numbers of migration and invasion cells in TGF-β1+5 μmo·l L-1 CHE group and TGF-β1+10 μmo·l L-1 CHE group were significantly decreased(P<0.01).The Western blotting results showed that compared with control group,the expression level of E-cadherin protein in the cells in TGF-β1 group was significantly decreased(P<0.01),while the expression levels of N-cadherin and Vimentin proteins were increased(P<0.05 or P<0.01);compared with TGF-β1 group,the expression levels of E-cadherin protein in the cells in TGF-β1+5 μmol·L-1 CHE group and TGF-β1+10 μmol·L-1 CHE group were significantly increased(P<0.01),and the expression levels of N-cadherin and Vimentin proteins were significantly decreased(P<0.01).The immunofluorescence staining results showed that compared with control group,the fluorescence intensity of E-cadherin in the cells in TGF-β1 group was decreased,and the fluorescence intensity of N-cadherin was increased;compared with TGF-β1 group,the fluorescence intensities of E-cadherin in the cells in TGF-β 1+5 μmol·L-1 CHE group and TGF-β1+10 μmol·L-1 CHE group were significantly increased,and the fluorescence intensities of N-cadherin were decreased.Conclusion:CHE can inhibit the proliferation,migration,invasion,and EMT of the human ovarian cancer SKOV3 cells.

Effect of downregulating proline-rich protein 11 expression on drug resistance of esophageal cancer drug resistant cell EC9706/DDP and its mechanism / 吉林大学学报(医学版)

Objective:To discuss the effect of downregulating the proline-rich protein 11(PRR11)expression on drug resistance of the esophageal cancer drug resistant cells,and to clarify the related mechanism.Methods:The drug resistant cells EC9706/cisplatin(DDP)were established by incrementally stimulating the human esophageal cancer EC9706 cells with the increasing concentrations of DDP.The drug sensitivity of the EC9706/DDP cells was detected by MTT assay;the expression levels of PRR11 mRNA and protein in the EC9706/DDP cells and their parent EC9706 cells were detected by real-time fluorescence quantitative PCR(RT-qPCR)and Western blotting methods.The EC9706/DDP cells were divided into control group,sh-NC group(infected with sh-NC),sh-PRR11 group(infected with sh-PRR11),sh-NC+DDP group(infected with sh-NC and treated with 4 mg·L-1 DDP),and sh-PRR11+DDP group(infected with sh-PRR11 and treated with 4 mg·L-1 DDP).The expression levels of PRR11 mRNA in the cells in various groups were detected by RT-qPCR method;the expression levels of PRR11,phosphoinositide 3-kinase(PI3K)p110α,protein kinase B(AKT),phosphorylated AKT(p-AKT),P-glycoprotein(P-gp),and multidrug resistance-associated protein 1(MRP1)proteins in the cells in various groups were detected by Western blotting method;the apoptotic rates of the cells in various groups were detected by flow cytometry.Results:The DDP-resistant cell line EC9706/DDP was successfully obtained,and the drug resistance index was 7.23±0.86.Compared with the EC9706 cells,the expression levels of PRR11 mRNA and protein in the EC9706/DDP cells were increased(P<0.05).Compared with control and sh-NC groups,the expression levels of PRR11 mRNA and protein in the cells in sh-PRR11 group were decreased(P<0.05),and the 50%inhibitory concentration(IC50)of DDP was decreased(P<0.05).Compared with sh-NC group,the expression levels of PI3K p110α,p-AKT,P-gp,and MRP1 proteins in the cells in sh-NC+DDP and sh-PRR11 groups were decreased(P<0.05),and the apoptotic rate of the cells was increased(P<0.05).Compared with sh-NC+DDP group and sh-PRR11 group,the expression levels of PI3K p110α,p-AKT,P-gp,and MRP1 proteins in the cells in sh-PRR11+ DDP group were increased(P<0.05),and the apoptotic rate of the cells was increased(P<0.05).Conclusion:Downregulating the expression of PRR11 gene in the drug resistant EC9706/DDP cells can inhibit the expressions of drug resistance-related proteins,reverse the resistance to DDP,and induce the apoptosis;its mechanism may be related to the inhibition of activation of the PI3K/AKT signaling pathway.