Tumor nasal de músculo liso de comportamiento maligno incierto: informe de un caso / Nasal smooth muscle tumor of uncertain malignant potential: A case report

Los tumores de músculo liso que no pueden ser clasificados según su histología como leiomiomas o leiomiosarcomas se denominan tumores de músculo liso de comportamiento maligno incierto. La localización nasal de estos tumores es muy infrecuente y la extensión adecuada de la cirugía para tratar estas neoplasias no está bien definida. Se describe el caso clínico de una adolescente de 16 años, que consultó por padecer un tumor de aspecto vascular en la cavidad nasal derecha y que fue tratada con éxito mediante cirugía intranasal. El diagnóstico histológico fue tumor de músculo liso de comportamiento maligno incierto. Por la rareza de estas neoplasias, su infrecuente localización nasal y la falta de evidencia que soporte cuál debe ser la extensión de la cirugía, es relevante la descripción y discusión del caso clínico.

Smooth muscle tumors that cannot be histologically classified as leiomyomas or leiomyosarcomas are defined as smooth muscle tumors of uncertain malignant potential. The location of these tumors in the nose is very rare, and the appropriate surgical extent to manage these neoplasms has not been adequately defined. Here we describe the case of a 16-year-old female adolescent who consulted due to a vascular-like tumor in the right nasal cavity who was successfully treated with intranasal surgery. The histological diagnosis was smooth muscle tumor of uncertain malignant potential. Given that these neoplasms are rare, the uncommon location in the nose, and the lack of evidence indicating the extent of surgery, it is relevant to describe and discuss this clinical case.

Tumor neuroectodérmico maligno del tracto gastrointestinal: a propósito de un caso / Malignant neuroectodermal tumor of the gastrointestinal tract: case report

El tumor neuroectodérmico maligno del tracto gastrointestinal es una neoplasia rara con pocos casos reportados en la literatura, especialmente en América Latina. Descrito por primera vez en 2003, se trata de una entidad sin tratamiento estandarizado y de pobre pronóstico. Se presenta el caso de una paciente de 22 años de edad que acude a la consulta por dolor abdominal, anemia y masa abdominal palpable. Luego de estudios pertinentes se decide la conducta resectiva y el posterior tratamiento oncológico. (AU)

Malignant gastrointestinal neuroectodermal tumor (GNET), formerly known as clear cell sarcoma of the gastrointestinal tract, is an extremely rare tumor of mesenchymal origin, which presents great microscopic and molecular similarity to clear cell sarcoma found in other parts of the body, such as tendons and aponeurosis. It is characterized by its rapid evolution, high recurrence rate and frequent diagnosis as metastatic disease.1,2 (AU)

Effectiveness and tolerance of electrochemotherapy as palliative therapy for patients with head and neck cancer and malignant melanoma and its relation to early skin reaction

Abstract Objectives To evaluate the efficacy and tolerance after the electrochemotherapy treatment for local therapy of cutaneous and subcutaneous metastases of head-and-neck tumors and malignant melanoma refractory to standard therapies, mainly in neck metastasis of squamous cell carcinoma. And, to evaluate the relation of this response according to the skin reaction (healing with ulcer or dry crust). Methods prospective pase II, observational clinical study of 56 patients with metastases of head-and-neck squamous cell carcinoma (n = 13), papillary thyroid carcinoma (n = 4), adenoid cystic carcinoma of parotid gland (n = 1) or malignant melanoma (n = 37, 5 in head). Patients were treated by electrochemotherapy (application of electrical pulses into the tumor) after the administration of a single intravenous dose of bleomycin. Kaplan-Meier curves were performed. The statistical significance was evaluated using log-rank test; p-value of less than 0.05 was considered as significant. Results Overall clinical response was observed in 47 patients (84%). Local side effects were mild in all the patients. Ten patients (76.9%) with neck metastasis of squamous cell carcinoma had some degree of response, but only in one was complete. Patients even with only partial response had a higher overall survival than patients without response (p = 0.02). Most of the patients with squamous cell carcinoma had diminution of pain and anxiety. Response rate and overall survival was higher in MM patients (86.5%) than in squamous cell cancer patients (76.9%) (p = 0.043). The healing process (dry crust/ulcer) was not associated with the overall survival (p = 0.86). Conclusions Electrochemotherapy is associated a higher overall survival and diminution of pain and anxiety. Therefore, it is an option as palliative treatment for patients with neck metastasis of squamous cell carcinoma refractory to other therapies or even as a concomitant treatment with newer immunotherapies. The type of healing of the surgical wound could not be associated with a higher rate of response or survival. Level of evidence III.

When the fever will not stop, stop the pills! A case report

ABSTRACT Neuroleptic malignant syndrome (NMS) is a neurologic emergency potentially fatal. This rare side effect is most commonly associated with first-generation antipsychotics and less frequently with atypical or second-generation antipsychotics. The diagnosis relies on both clinical and laboratory criteria, with other organic and psychiatric conditions being ruled out. CASE REPORT: A 39-year-old female patient, who is institutionalized and completely dependent, has a medical history of recurrent urinary infections and colonization by carbapenem-resistant Klebsiella pneumoniae. Her regular medication regimen included sertraline, valproic acid, quetiapine, risperidone, lorazepam, diazepam, haloperidol, baclofen, and fentanyl. The patient began experiencing dyspnea. Upon physical examination, she exhibited hypotension and a diminished vesicular murmur at the right base during pulmonary auscultation. Initially, after hospitalization, she developed high febrile peaks associated with hemodynamic instability, prompting the initiation of antibiotic treatment. Despite this, her fever persisted without an increase in blood inflammatory parameters, and she developed purulent sputum, necessitating antibiotherapy escalation. The seventh day of hospitalization showed no improvement in symptoms, suggesting NNMS as a differential diagnosis. All antipsychotic and sedative drugs, as well as antibiotherapy, were discontinued, after which the patient showed significant clinical improvement. CONCLUSION: Antipsychotic agents are commonly employed to manage behavioral changes linked to various disorders. However, their severe side effects necessitate a high degree of vigilance, the cessation of all medications, and the implementation of supportive care measures. A prompt and accurate diagnosis of NMS is crucial to alleviating the severe, prolonged morbidity and potential mortality associated with this syndrome.

Analysis of intraoperative frozen section diagnosis of 1 263 pulmonary nodules / 中国胸心血管外科临床杂志

@#Objective    To explore the key points and difficulties of intraoperative frozen section diagnosis of pulmonary diseases. Methods    The intraoperative frozen section and postoperative paraffin section results of pulmonary nodule patients in Beijing Chaoyang Hospital, Capital Medical University from January 2021 to January 2022 were collected. The main causes of misdiagnosis in frozen section diagnosis were analyzed, and the main points of diagnosis and differential diagnosis were summarized. Results    According to the inclusion criteria, a total of 1 263 frozen section diagnosis results of 1 178 patients were included in the study, including 475 males and 703 females, with an average age of 58.7 (23-86) years. In 1 263 frozen section diagnosis results, the correct diagnosis rate was 95.65%, and the misdiagnosis rate was 4.35%. There were 55 misdiagnoses, including 18 (3.44%) invasive adenocarcinoma, 17 (5.82%) adenocarcinoma in situ, 7 (35.00%) mucinous adenocarcinoma, 4 (2.09%) minimally invasive adenocarcinoma, 3 (100.00%) IgG4 related diseases, 2 (66.67%) mucinous adenocarcinoma in situ, 1 (16.67%) atypical adenomatous hyperplasia, 1 (14.29%) sclerosing pulmonary cell tumor, 1 (33.33%) bronchiolar adenoma, and 1 (100.00%) papillary adenoma. Conclusion    Intraoperative frozen section diagnosis still has its limitations. Clinicians need to make a comprehensive judgment based on imaging examination and clinical experience.

Photodynamic therapy in the treatment of the right buccal mucosa verrucous carcinoma: a case report and literature review / 口腔疾病防治

Objective@#To explore the photodynamic treatment method and therapeutic effect of oral verrucous carcinoma and to provide a reference for the clinic.@*Methods@#This study follows the requirements of medical ethics. This paper summarized the photodynamic treatment of an oral verrucous carcinoma with a diameter of approximately 2.5 cm in the right buccal mucosa and retrospectively analyzed the characteristics and treatment of oral verrucous carcinoma and the photodynamic treatment of potential malignant lesions of the oral mucosa through a review of the literature.@*Results@#After four rounds of photodynamic therapy, the size of the right buccal lesion was significantly reduced. After 6 months of follow-up, the white verrucous hyperplasia of the right buccal mucosa had completely subsided, and there was no obvious scar formation. Three years after treatment, there was no recurrence of the lesion in the right buccal mucosa and no obvious scar formation in the treated area. The degree of mouth opening was 3 fingers, and there was no lymph node enlargement in the bilateral submandibular, submental or neck. The literature review shows that oral verrucous carcinoma is a rare subtype of squamous cell carcinoma with the characteristics and biological behaviors of slow growth, low malignancy, and rare metastasis. Surgery is the preferred treatment, but there are some limitations. Photodynamic therapy is a minimally invasive, repeatable treatment with mild adverse reactions. In recent years, photodynamic therapy has been gradually applied for the treatment of potential malignant disorders of the oral mucosa and early oral squamous cell carcinoma and has achieved positive results, but it has not been reported for the treatment of oral verrucous cancer@*Conclusion@#Photodynamic therapy is a new option for nonsurgical resection of oral verrucous carcinoma.

Treatment Strategy of Leukopenia After Chemotherapy with Traditional Chinese Medicine from the Generation and Transmission of Defense Qi / 中医杂志

By analysing the similarity between defense qi and leukocytes in terms of function， site of action， and circadian rhythm， it is proposed that in traditional Chinese medicine （TCM）， the pathogenesis of leukopenia is defense qi deficiency. By analyzing the relevant discussions on the generation and transmission of defense qi in TCM classics， it is believed that the original qi in lower jiao （焦） is the source of defense qi， while the water and grain qi in middle jiao enriches defense qi， and the upper jiao transmits and distributes defense qi to the whole body. Therefore， when treating leukopenia after chemotherapy with TCM， Guilu Erxian Gelatin （龟鹿二仙胶） and Yougui Pill （右归丸） are often used to tonify the kidney and supplement essence， and moxibustion at Guanyuan （CV 4） and Qihai （CV 6） is usually accompanied to replenish the original qi in lower jiao and enrich the source of defense qi. Guipi Decoction （归脾汤）， Buzhong Yiqi Decoction （补中益气汤）， Shenling Baizhu Powder （参苓白术散）， and Sijunzi Decoction （四君子汤） are often suggested to strengthen spleen and replenish qi， in combination with moxibustion at Zhongwan （CV 12） and Zusanli （ST 36） to transport the spleen and stomach in the middle jiao to enrich the defense qi. Modified Guizhi Decoction （桂枝汤） to harmonize nutrient and defensive aspects is often used， and moxibustion at Dazhui （GV 14） and Feishu （BL 13） or scraping is added to dredge the striae and interstice in the upper jiao and promote transmission and dissemination of the defense qi. Considering the whole process of generation and distribution of defense qi， it is suggested to choose the most appropriate treatment modality flexibly， and combine internal treatment with external treatment， in order to provide ideas for the treatment of leukopenia in tumour patients.

Primary Anorectal Melanoma: Case Report and Review of a Rare Neoplasm

Primary anorectal melanoma is a rare malignant melanocytic neoplasm; its principal manifestation is rectal bleeding. It has an ominous prognosis with a five-year survival rate of 10%. The case of a 56-year-old woman with rectal bleeding and the sensation of a rectal mass is presented. A polypoid lesion, resected transanally, was documented in the distal rectum during the colonoscopy. The histological study confirmed a primary anorectal melanoma.

El melanoma anorrectal primario es una neoplasia melanocítica maligna poco frecuente, su principal manifestación es el sangrado rectal. Tiene un pronóstico ominoso con una tasa de sobrevida del 10% a 5 años. Se presenta el caso de una mujer de 56 años con rectorragia y sensación de masa rectal. Durante la colonoscopia se documentó una lesión polipoide en el recto distal, que se resecó por vía transanal. El estudio histológico confirmó la presencia de un melanoma anorrectal primario.

Sífilis maligna: comunicación de 2 casos en pacientes sin SIDA / Malignant syphilis: report of 2 cases in patients without AIDS

La sífilis es una enfermedad polifacética que siempre requiere diagnósticos diferenciales. Una forma rara de la sífilis secundaria, es la llamada sífilis maligna caracterizada por lesiones ulcero necróticas cubiertas por gruesas costras de aspecto rupioide u ostráceo. Actualmente se observa principalmente en pacientes infectados por el virus de la inmunodeficiencia humana, pero anteriormente ya fue descrita en otras situaciones debilitantes como el alcoholismo, desnutrición, diabetes etc. Eventualmente puede verse en pacientes inmunocompetentes como los 2 casos que presentamos.

Syphilis is a multifaceted disease that always requires differential diagnoses. A rare form of secondary syphilis is the so-called malignant syphilis characterized by necrotic ulcerated lesions covered by thick crusts with a rupioid or ostraceous appearance. Currently observed mainly in patients infected with the human immunodeficiency virus, but it was previously described in other debilitating situations such as alcoholism, y malnutrition. Eventually it can be seen in immunocompetent patients like the 2 cases we present.

Efecto de los fármacos en la prolongación del QT y la aparición de muerte súbita en la COVID-19 / Effect of Drugs on QT Prolongation and Sudden Death in COVID-19

Introducción: Las evidencias científicas han demostrado que durante el período pandémico por la COVID-19 ha existido un incremento de la incidencia de muerte súbita cardiovascular, proporcional al incremento de los casos y a la letalidad por la enfermedad. Objetivos: Compilar información sobre los fármacos empleados en el tratamiento de la COVID-19 y sus posibles efectos en la prolongación del intervalo QT y la aparición de muerte súbita. Métodos: Se realizó una búsqueda de información a partir de las bases de datos PubMed, Medline y SciELO, en los idiomas español e inglés en el período de enero de 2020 a enero de 2023. Resultados: Los hallazgos más recientes sugieren que los factores relacionados con el tratamiento médico del paciente para sus enfermedades cardiovasculares previas, el empleo concomitante de drogas para otras comorbilidades, el ensayo de nuevas drogas que se investigan en la actualidad para el tratamiento de la enfermedad y el uso inadecuado de fármacos en complicaciones graves por la COVID-19, pueden ocasionar prolongación del intervalo QT y arritmias ventriculares tipo torsades de pointes, lo que puede conllevar a la aparición de muerte súbita. Conclusiones: Ha sido demostrado el efecto deletéreo de los fármacos en el tratamiento de la COVID-19 y sus posibles asociaciones a la terapéutica del paciente, en la prolongación del tiempo de repolarización ventricular cardíaca, cuya traducción eléctrica es un intervalo QT prolongado y su contribución a la génesis de arritmias malignas potencialmente fatales capaces de desencadenar un paro cardíaco y evolucionar a la muerte súbita(AU)

Scientific evidence has shown an increase in the incidence of sudden cardiovascular death during the COVID-19 pandemic period. This has been proportional to the increase in cases and mortality from the disease. Direct and indirect injury to the myocardium and vascular system allow to partially explain the statistics. Among the factors related to the medical treatment of the patient for previous cardiovascular diseases, it is the concomitant use of drugs for other comorbidities. The trial of new drugs for the treatment of this condition and the inappropriate use of drugs in serious complications from COVID-19 are currently being investigated. These can cause QT prolongation and torsades de pointes ventricular arrhythmias, which can lead to sudden death. Monitoring the QT interval is recommended, before and during treatment, in patients who come to the emergency room with a clinical condition suggestive of COVID-19. Additionally, modifiable factors favoring its prolongation should be evaluated. Decision-making in the application of therapeutic protocols in patients with COVID-19 with prolonged QTc at baseline, or with increased QTc after starting treatment, must go through the analysis of the risk/benefit ratio defined by a multi- and interdisciplinary team(AU)

Síndrome neuroléptico maligno

El síndrome neuroléptico maligno (SNM) es una reacción adversa medicamentosa potencialmente fatal asociada comúnmente a medicamentos antipsicóticos. Este artículo presenta una revisión actualizada sobre el SNM, aborda su epidemiología, factores de riesgo, presentación clínica, posibles mecanismos subyacentes y tratamiento. Se busca mejorar el reconocimiento temprano, diagnóstico y manejo del SNM en el ámbito clínico para reducir su morbimortalidad. La búsqueda de literatura se realizó en PubMed, fueron priorizados ensayos aleatorizados, revisiones sistemáticas, estudios retrospectivos y reportes de caso. La incidencia del SNM ha disminuido en los últimos años, posiblemente debido a una mejor prescripción y titulación de la medicación. Los factores de riesgo incluyen el uso de antipsicóticos de alta potencia, dosis elevadas, incremento rápido de la dosis y uso de antipsicóticos inyectables de depósito. Se han identificado factores ambientales como la deshidratación, sujeción mecánica y temperaturas extremas. Algunas características psicopatológicas, como la agitación psicomotriz y la confusión, también se han asociado al SNM. Los factores hereditarios y los polimorfismos genéticos pueden influir en la susceptibilidad al SNM, pero se requieren estudios adicionales. La fisiopatología del SNM se relaciona con el bloqueo excesivo de los receptores dopaminérgicos, pero otros cofactores y sistemas neurotransmisores también podrían estar involucrados. El cuadro clínico del SNM se caracteriza por cambios en el estado mental, rigidez muscular, hipertermia, síntomas catatónicos y sudoración profusa. Existen diversas formas de tratamiento, desde medidas generales hasta intervenciones farmacológicas.

The Neuroleptic malignant syndrome (NMS) is a potentially fatal adverse drug reaction commonly associated with antipsychotic medications. This article presents an updated review of NMS, addressing its epidemiology, risk factors, clinical presentation, possible underlying mechanisms, and treatment. The aim is to improve early recognition, diagnosis, and management of NMS in the Peruvian clinical setting to reduce morbidity and mortality. The literature search was conducted in PubMed, prioritizing randomized studies, systematic reviews, retrospective studies, and case reports. The incidence of NMS has decreased in recent years, possibly due to better medication prescription and titration. Risk factors include the use of high-potency antipsychotics, high doses, rapid dose escalation, and the use of depot injectable antipsychotics. Environmental factors such as dehydration, mechanical restraint, and extreme temperatures have been identified. Some psychopathological characteristics, such as psychomotor agitation and confusion, have also been associated with NMS. Genetic factors and genetic polymorphisms may influence susceptibility to NMS, but further studies are needed. The pathophysiology of NMS is related to excessive blockade of dopaminergic receptors, but other cofactors and neurotransmitter systems may be involved. The clinical presentation of NMS is characterized by changes in mental status, muscle rigidity, hyperthermia, catatonic symptoms, and profuse sweating. There are various treatment approaches ranging from general measures to pharmacological interventions.

Carcinoma basocelular diagnosticado por dermatoscopia en consulta de dermatología del Hospital Universitario Miguel Enríquez

Fundamento: el carcinoma basocelular es un tumor maligno muy frecuente en el ser humano. Se considera invasivo de forma local, además de agresivo y destructivo. Objetivo: mostrar el comportamiento de los pacientes con carcinoma basocelular diagnosticados por dermatoscopia en consulta de dermatología del Hospital Universitario Miguel Enríquez, entre junio de 2020 y mayo de 2021. Método: se realizó un estudio descriptivo, de corte transversal, para mostrar el comportamiento de los pacientes con carcinoma basocelular que asistieron a la consulta de dermatología del Hospital Universitario Miguel Enríquez en el periodo de junio 2020 a mayo 2021. El universo de estudio se conformó por los pacientes mayores de 18 años que presentaron una o varias lesiones presuntivas de carcinoma basocelular menores de 3 cm de diámetro. Se utilizaron las variables: edad, sexo, fototipo de piel, formas clínicas, patrones dermatoscópicos, topografía de la lesión, ocupación relacionada o no con la exposición solar. Se trabajó con frecuencias absolutas, porcentaje, media, desviación estándar, valores máximos y mínimos, la razón, pruebas de ji-cuadrado y t de student, con significación p≤0,05. Resultados: predominó en ancianos (66,4±14,9 años), en hombres (54,1 %), con fototipo 2 (57,8 %), y en nariz el 33,9 %. La forma nodular fue más frecuente (41,3 %), ocupación expuesta al sol (66,9 %), tamaño promedio de la lesión 1,4 cm. La dermatoscopia mostró predominio de los vasos arborizantes (73,4 %). Por histología se confirmó el 90,8 % de los casos. Conclusiones: predominaron entre los pacientes los ancianos, con fototipo 2. La forma nodular fue más frecuente, el tamaño promedio de la lesión fue de 1,4 cm. La dermatoscopia mostró predominio de los vasos arborizantes. La dermatoscopía resultó ser una herramienta necesaria para el uso sistemático en dermatología.

Foundation: basal cell carcinoma is a very common malignant tumor in humans. It is considered locally invasive, also aggressive and destructive. Objective: to show the behavior of patients with basal cell carcinoma diagnosed by dermoscopy in dermatology clinic of the Miguel Enríquez University Hospital, between June 2020 and May 2021. Method: a descriptive, cross-sectional study was carried out to show the behavior of patients with basal cell carcinoma who attended the dermatology consultation at the Miguel Enríquez University Hospital from June 2020 to May 2021. The universe of study was made up of patients older than 18 years who presented one or more presumptive lesions of basal cell carcinoma less than 3 cm in diameter. The variables used were: age, sex, skin phototype, clinical forms, dermoscopic patterns, topography of the lesion, occupation related or not to sun exposure. We worked with absolute frequencies, percentage, mean, standard deviation, maximum and minimum values, the ratio, chi-square and student's t tests, with significance p≤0.05. Results: it prevailed in the elderly (66.4±14.9 years), in men (54.1 %), with phototype 2 (57.8 %), and in the nose 33.9 %. The nodular form was more frequent (41.3 %), occupation exposed to the sun (66.9 %), average size of the lesion 1.4 cm. Dermoscopy showed a predominance of arborizing vessels (73.4 %). By histology, 90.8 % of the cases were confirmed. Conclusions: the elderly prevailed among the patients, with phototype 2. The nodular form was more frequent, the average size of the lesion was 1.4 cm. Dermoscopy showed a predominance of arborizing vessels. Dermoscopy turned out to be a necessary tool for systematic use in dermatology.

Hipertermia maligna en paciente sometida a mastectomía radical tipo Madden / Malignant hyperthermia in a patient undergoing Madden type radical mastectomy

Resumen: El objetivo del presente estudio es dar a conocer el manejo anestésico que se proporcionó ante un evento crítico hipertermia maligna (HM) en una mastectomía radical Madden programada de manera electiva, la cual fue manejada con lo que se contaba en ese momento por no tener el fármaco específico (dantroleno) para este tipo de evento HM. El cáncer de mama es una enfermedad compleja, es la primera causa de muerte en la mujer a nivel mundial, ocurre en 70% en países desarrollados. México se encuentra en un nivel intermedio, representa un problema de salud con tendencia a la alta debido al envejecimiento de la población y a mayor prevalencia en factores de riesgo. La HM es un trastorno farmacogenético desencadenado por anestésicos que liberan una masiva acumulación de calcio en el sarcoplasma, que conduce a un metabolismo acelerado y a un incremento en la actividad contráctil del musculoesquelético, llevando a un estado hipermetabólico que genera un incremento en la temperatura corporal llegando a tener secuelas importantes y una alta mortalidad. Se trató de paciente femenino 40 años sin antecedentes relevantes para procedimientos anestésicos, se aplicó anestesia general balanceada, a los 60 minutos presentó datos clínicos que nos sugerían hipertermia maligna, fue manejada con los medios disponibles y se obtuvo un resultado favorable desde el punto de vista de morbimortalidad.

Abstract: The objective of the present is to present the anesthetic management that occurred before a critical event malignant hyperthermia HM) in an electively scheduled Madden radical mastectomy and which was managed with what was available at that time for not having the drug specific (dantrolene) for this type of event HM. Breast cancer is a complex disease, being the leading cause of death in women worldwide, with 70% occurring in developed countries. Mexico is at an intermediate level, being a health problem with a tendency to rise due to the aging of the population. population and higher prevalence of risk factors. Malignant hyperthermia (MH) is an anesthetic-triggered pharmacogenetic disorder that triggers a massive accumulation of calcium in the sarcoplasm, leading to accelerated metabolism and increased skeletal muscle contractile activity. Leading to a hypermetabolic state showing an increase in body temperature, leading to significant sequelae and high mortality. It was a 40-year-old female with no relevant history for anesthetic procedures, being managed with balanced general anesthesia at 60 minutes present data clinicians that they suggested malignant hyperthermia, being managed. With the available means, obtaining a favorable result from the point of view of morbidity and mortality.

Líquen Plano Oral e seu Potencial de Malignização / Lichen Planus and its potencial for malignancy

Objetivos: Instruir e orientar ao cirurgião dentista e demais profissionais de saúde a importância da detecção e rastreio precoce de lesões pré-malignas. Revisão de Literatura: O Líquen Plano Oral é uma condição dermatológica crônica, de origem auto-imune, relativamente comum na população, que atinge o epitélio de mucosa e pele, sendo considerada, pela Organização Mundial de Saúde (OMS), uma desordem potencialmente maligna quando associado a áreas de ulceração. A revisão de literatura foi realizada nas bases de dados PubMed e Lilacs. Buscamos investigar o potencial de malignização do Líquen Plano Oral associado a condições erosivas, analisando o processo de carcinogênese no processo inflamatório. Conclusão: Conclui-se que o objeto de estudo ainda é um assunto pouco explorado pela literatura, porém há indícios etiopatológicos que enfatizam o processo de malignização oriundo de uma lesão pré-maligna como o Líquen Plano Oral. Além disso, enfatizamos a importância do diagnóstico precoce das lesões estomatognáticas, para que assim possamos aumentar as chances de cura do paciente.(AU)

Objectives: To instruct and guide dentists and other health professionals on the importance of early detection and screening of pre-malignant lesions. Literature Review: Oral Lichen Planus is a chronic dermatological condition, of autoimmune origin, relatively common in the population, which affects the epithelium of the mucosa and skin, being considered, by the World Health Organization (WHO), a potentially fatal disorder. malignant when associated with areas of ulceration. A literature review was performed on the PubMed and Lilacs databases. We sought to investigate the potential for malignancy of Oral Lichen Planus associated with erosive conditions, analyzing the process of carcinogenesis in the inflammatory process. Conclusion: It is concluded that the object of study is still a subject little explored in the literature, but there are etiopathological accusations that emphasize the process of malignancy arising from a pre-malignant lesion such as Oral Lichen Planus. In addition, we emphasize the importance of early diagnosis of stomatognathic lesions, so that we can increase the patient's chances of cure.(AU)

STRN-ALK rearranged malignant peritoneal mesothelioma—Presenting with bilateral extensive pelvic masses in a young woman: Mimicking low-grade serous ovarian carcinoma

Malignant peritoneal mesothelioma (MPM) is an exceptionally rare tumor type. Although some somatic/germline genetic alterations including BAP1 loss have been identified in some cases, the molecular properties of MPMs are remained poorly understood. In recent years, anaplastic lymphoma kinase (ALK) gene rearrangement was revealed in a subset of (3.4%) MPMs. Low-grade serous carcinomas (LGSCs) are a rare subtype of ovarian carcinoma and have some morphologic and immunophenotypic overlapping features with MPMs and this may cause misdiagnosis in daily practice. Here, we report a case of 18-year-old women with STRN-ALK-rearranged MPM and no previous exposure to asbestos. This case was presented with bilateral pelvic masses and histologically was displaying pure papillary morphology with mild-to-moderate nuclear atypia, psammoma bodies, and diffuse PAX8 expression as LGSCs. With the detection of ALK alteration in some of the MPMs, a targeted treatment option has emerged for these unusual tumor types.

Peritoneal sarcomatosis due to undifferentiated pleomorphic sarcoma: A case report and review of the literature

Undifferentiated pleomorphic sarcoma (UPS), which was previously known as malignant fibrous histiocytoma (MFH), rarely presents in the abdomen, and sarcomatosis due to UPS has not yet been reported in the literature. Here, we present a 62-year-old man who had abdominal sarcomatosis due to UPS with a poor prognosis.

Prognostic roles and survival benefits of endoscopic resection versus surgical resection in the management of malignant colon polyps

Background: Due to few sufficient data regarding the comparison between endoscopic and surgical resection of malignant colorectal polyps regarding outcomes and survival benefits, there are no clear guidelines of management strategies of malignant colorectal polyps. The aims of the present study were to compare endoscopic resection alone and surgical resection in patients with malignant polyps in the colon (T1N0M0) readings advantages, disadvantages, recurrence risks, survival benefits, and long-term prognosis to detect how management strategy affects outcome. Patients and methods: we included 350 patients. All included patients were divided into 2 groups; the first group included 100 patients who underwent only endoscopic polypectomy and the second group included 250 patients who underwent endoscopic polypectomy followed by definitive surgical resection after histopathological diagnosis. We followed all patients for about 5 years, ranging from 18 to 55 months. The primarily evaluated parameters are surgical consequences and patients' morbidity. The secondary evaluated parameters are recurrence risks, recurrence free survival, and overall survival rates. Results: The age of patients who underwent polypectomy is usually younger than the surgical group, males have more liability to polypectomy in comparison with females. Patients with tumors in the left colon have more liability to polypectomy in comparison with the right colon (p< 0.0001). Tumor factors associated with more liability to surgical resection are presence of lymphovascular invasion, high grade, and poor tumor differentiation (p< 0.0001). The management strategy was the most significant predictor of overall and recurrence free survival rates in patients with malignant colon polyps (p< 0.001). Conclusions: We found that survival benefits and lower incidence of recurrence are detected in the surgical resection group more than in the polypectomy group. (AU)

La terapia electroconvulsiva en el síndrome neuroléptico maligno / Electroconvulsive therapy in neuroleptic malignant syndrome

Resumen: Uno de los efectos adversos más importantes de los neurolépticos es la posibilidad de desencadenar el síndrome neuroléptico maligno (NMS). El diagnóstico se determina por exclusión y el manejo terapéutico inicial será retirado por neurolépticos por la administración de benzodiacepinas y, en casos extremos, el uso de la terapia electroconvulsiva (ECT). La ECT es una opción terapéutica eficaz en estos pacientes y en esos casos se obtiene una mala respuesta a la administración con fármacos antipsicóticos. Basándonos en el caso del artículo «Rocuronium-sugammadex for electroconvulsive therapy management in neuroleptic malignant síndrome. A case report¼ donde se describe el manejo exitoso del uso de relajantes no despolarizantes y su reversor específico en terapias electroconvulsivas en pacientes diagnosticados de síndrome neuroléptico maligno, comentamos la fisiopatología e implicaciones anestésicas además de similitudes con otras entidades hipertérmicas, como es la hipertermia maligna.

Abstract: One of the most important adverse effects of neuroleptics is the possibility of triggering neuroleptic malignant syndrome (NMS). The diagnosis is determined by exclusion and the initial therapeutic management will be withdrawn by neuroleptics by the administration of benzodiazepines and, in extreme cases, the use of electroconvulsive therapy (ECT). ECT is an effective therapeutic option in these patients and in these cases a poor response to administration with antipsychotic drugs is obtained. Based on the case of the article «Rocuronium-sugammadex for the management of electroconvulsive therapy in neuroleptic malignant syndrome. A case report¼ where the successful management of the use of non-depolarizing relaxants and their specific reversal in electroconvulsive therapies in patients diagnosed with of malignant neuroleptic syndrome, we comment on the pathophysiology and anesthetic images as well as similarities with other hyperthermic entities, such as malignant hyperthermia.

Predictive factors of the contracture test for diagnosing malignant hyperthermia in a Brazilian population sample: a retrospective observational study

Abstract Introduction Malignant Hyperthermia (MH) is a pharmacogenetic, hereditary and autosomal dominant syndrome triggered by halogenates/succinylcholine. The In Vitro Contracture Test (IVCT) is the gold standard diagnostic test for MH, and it evaluates abnormal skeletal muscle reactions of susceptible individuals (earlier/greater contracture) when exposed to caffeine/halothane. MH susceptibility episodes and IVCT seem to be related to individual features. Objective To assess variables that correlate with IVCT in Brazilian patients referred for MH investigation due to a history of personal/family MH. Methods We examined IVCTs of 80 patients investigated for MH between 2004‒2019. We recorded clinical data (age, sex, presence of muscle weakness or myopathy with muscle biopsy showing cores, genetic evaluation, IVCT result) and IVCT features (initial and final maximum contraction, caffeine/halothane concentration triggering contracture of 0.2g, contracture at caffeine concentration of 2 and 32 mmoL and at 2% halothane, and contraction after 100 Hz stimulation). Results Mean age of the sample was 35±13.3 years, and most of the subjects were female (n=43 or 54%) and MH susceptible (60%). Of the 20 subjects undergoing genetic investigation, 65% showed variants in RYR1/CACNA1S genes. We found no difference between the positive and negative IVCT groups regarding age, sex, number of probands, presence of muscle weakness or myopathy with muscle biopsy showing cores. Regression analysis revealed that the best predictors of positive IVCT were male sex (+12%), absence of muscle weakness (+20%), and personal MH background (+17%). Conclusions Positive IVCT results have been correlated to male probands, in accordance with early publications. Furthermore, normal muscle strength has been confirmed as a significant predictor of positive IVCT while investigating suspected MH cases.

Fatigue, depression, and physical activity in patients with malignant hyperthermia: a cross-sectional observational study

Abstract Background Malignant Hyperthermia (MH) is a pharmacogenetic disorder triggered by halogenated anesthesia agents/succinylcholine and characterized by hypermetabolism crisis during anesthesia, but also by day-to-day symptoms, such as exercise intolerance, that may alert the health professional. Objective The study aimed to analyze the incidence of fatigue in MH susceptible patients and the variables that can impact perception of fatigue, such as the level of routine physical activity and depression. Methods A cross-sectional observational study was carried out with three groups - 22 patients susceptible to MH (positive in vitro muscle contracture test), 13 non-susceptible to MH (negative in vitro muscle contracture test) and 22 controls (no history of MH). Groups were assessed by a demographic/clinical questionnaire, a fatigue severity scale (intensity, specific situations, psychological consequences, rest/sleep response), and the Beck depression scale. Subgroups were re-assessed with the Baecke habitual physical exercise questionnaire (occupational physical activity, leisure physical exercise, leisure/locomotion physical activity). Results There were no significant differences among the three groups regarding fatigue intensity, fatigue related to specific situations, psychological consequences of fatigue, fatigue response to resting/sleeping, depression, number of active/sedentary participants, and the mean time and characteristics of habitual physical activity. Nevertheless, unlike the control sub-group, the physically active MH-susceptible subgroup had a higher fatigue response to resting/sleeping than the sedentary MH susceptible subgroup (respectively, 5.9 ± 1.9 vs. 3.9 ± 2, t-test unpaired, p< 0.05). Conclusion We did not detect subjective fatigue in MH susceptible patients, although we reported protracted recovery after physical activity, which may alert us to further investigation requirements.