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1.
RECIIS (Online) ; 18(1)jan.-mar. 2024.
Article in Portuguese | LILACS, ColecionaSUS | ID: biblio-1553550

ABSTRACT

O presente estudo parte de reflexões acerca da sobrevivência ao câncer e da experiência estigmatizante vivenciada por pessoas diagnosticadas com câncer de laringe no Hospital Nacional do Câncer/Instituto Nacional do Câncer, submetidas à cirurgia de Laringectomia Total e participantes do Grupo de Laringec-tomizados Totais. O objetivo foi compreender as mediações de saberes e de informações produzidas pelos participantes do grupo na interface com os profissionais de saúde, considerando a sua dupla condição de estigma: o câncer e a deficiência. Parte-se de uma abordagem socioantropológica de caráter qualitativo e ex-ploratório que empregou os métodos de entrevista narrativa com cinco participantes. A análise foi realizada pelo método hermenêutico-dialético. Nos resultados destacam-se a busca pelo reconhecimento individual e social e a valorização da experiência frente aos saberes oficiais e o quanto as mediações extrapolam o espaço institucional. A mediação de saberes faz emergirem elementos significativos para o enfrentamento de uma cultura informacional dominante.


This study is based on reflections on surviving cancer and the stigmatizing experience of people diagnosed with laryngeal cancer at the Hospital Nacional do Câncer/Instituto Nacional do Câncer, who underwent Total Laryngectomy surgery and participated in the Total Laryngectomy Group. The goal was to understand the mediations of knowledge and information produced by the group participants, in the interface with health professionals, considering their double condition of stigma: cancer and disability. It is based on a socio-anthropological approach, of qualitative and exploratory nature that employed the narrative interview method with five participants. The analysis was carried out through the hermeneutic-dialectic method. The results highlight the search for individual and social recognition and the appreciation of experience in relation to official knowledge, and how the mediations go beyond the institutional space. The mediation of knowledge brings out significant elements to confront a dominant informational culture.


El presente estudio se basa en las reflexiones sobre la supervivencia al cáncer y la experiencia estigmatiza-dora de personas diagnosticadas de cáncer de laringe en el Hospital Nacional do Câncer/Instituto Nacional do Câncer, que se sometieron a una Laringectomía Total y participaron en el Grupo de Laringectomía Total. Objetivo: comprender las mediaciones de conocimiento e información producidas por los participantes del grupo, en la interfaz con los profesionales de salud, considerando su doble estigma: cáncer y discapacidad. Se basa en un abordaje socioantropológico, cualitativo y exploratorio, que utilizó métodos de entrevista narrativa con cinco participantes. El análisis ocurrió a través del método hermenéutico-dialéctico. Los resultados destacan la búsqueda de reconocimiento individual y social y la valorización de la experiencia en relación con el conocimiento oficial y la medida en que las mediaciones van más allá del espacio insti-tucional. La mediación del conocimiento pone de manifiesto elementos significativos sobre una cultura informacional dominante.


Subject(s)
Tracheostomy , Laryngeal Neoplasms , Health Communication , Mediation Analysis , Health Policy , Laryngectomy , Public Policy , Socioeconomic Factors , Ostomy , Cancer Survivors , Medical Oncology
2.
Article in Spanish | LILACS, BNUY, UY-BNMED | ID: biblio-1550014

ABSTRACT

Introducción: El cáncer de laringe es el tumor maligno de mayor prevalencia en la Otorrinolaringología. La topografía glótica es la más frecuente en Uruguay y suele detectarse en estadios tempranos dada la manifestación precoz y sostenida de disfonía. El objetivo de este estudio es describir la sobrevida libre de enfermedad (SLE) y la sobrevida global (SG) de los pacientes con cáncer de laringe glótico en estadio T1N0M0 en 4 instituciones de Montevideo. Metodología: Se analizó de forma retrospectiva la SG y SLE de 55 pacientes diagnosticados con cáncer de glotis T1 entre los años 2009 y 2019. Para el cálculo de la sobrevida se utilizó el método de Kaplan-Meier. Se estudió además el efecto de variables pronósticas de interés sobre la SG mediante análisis univariado y multivariado. Resultados: En la muestra analizada la SG de los pacientes con cáncer glótico T1N0M0 fue como media de 7.706 años (IC 95% 6.63 - 8.78). A los 5 años, la SG fue de 77.5% (± 7%) y de 62% (± 9.8%) a los 10 años. La SLE para todos los pacientes correspondió al 74.6% (± 7.5%) y 63.1% (± 9.8%), a 5 y 10 años respectivamente. No se alcanzaron las medianas de SG ni de SLE para los grupos. Conclusiones: Los valores de SG y SLE medios obtenidos en nuestro medio son comparables a los valores reportados en la bibliografía internacional. No se alcanzó la mediana de SG ni de SLE, por lo que se puede afirmar que ésta enfermedad tiene, cuando se realiza el tratamiento adecuado, un buen pronóstico vital a los 10 años. Se requiere un seguimiento más largo para determinar las medianas de SG y SLE de los grupos en estudio.


Introduction: Laryngeal cancer is the most prevalent malignant tumor in Otorhinolaryngology. Glottic topography is the most frequent in Uruguay and is usually detected in early stages given the early and sustained manifestation of dysphonia. The objective of this study is to analyze disease-free survival (DFS) and overall survival (OS) of patients with stage T1N0M0 glottic laryngeal cancer at 4 institutions in Montevideo. Methodology: The mean OS and DFS of 55 patients diagnosed with T1 glottic cancer between 2009 and 2019 were retrospectively analyzed. Kaplan-Meier method was used to calculate survival. The prognostic effect of certain variables of interest on OS was also studied using univariate and multivariate analysis. Results: In this study, mean odds survival (OS) for T1N0M0 glottic cancer was 7.706 years (CI 95% 6.63 - 8.78). At 5 years, OS was 77.5% (± 7%) and at 10 years was 62% (± 9.8%). Disease free survival (DFS) was 74.6% ± (7.5%) at 5 years and 63.1% (± 9.8%), at 10 years. Median OS and DFS for the groups were not reached. Conclusions: OS and DFS in our medium is comparable to that reported in the international literature. The median OS and DFS were not reached, so it can be stated that this disease has, when appropriate treatment is performed, a good vital prognosis at 10 years. Longer follow-up is required to determine the median OS and DFS of the study groups.


Introdução: O câncer de laringe é o tumor maligno mais prevalente na Otorrinolaringologia. A topografia glótica é a mais frequente no Uruguai e geralmente é detectada em estágios iniciais devido à manifestação precoce e sustentada da disfonia. O objetivo deste estudo é analisar a sobrevida livre de doença (DFS) e a sobrevida global (OS) de pacientes com câncer de laringe glótico estágio T1N0M0 em 4 instituições em Montevidéu. Metodologia: Foram analisados retrospectivamente o OS e DFS de 55 pacientes diagnosticados com câncer glótico T1 entre 2009 e 2019. O método de Kaplan-Meier foi usado para calcular a sobrevida. Resultados: Na amostra, a sobrevida global (OS) do câncer glótico T1N0M0 foi em média de 7.706 anos (IC 95% 6,63 - 8,78). Aos 5 anos, a OS foi de 77,5% (± 7%) e 62% (± 9,8%) aos 10 anos. A DFS para todos os pacientes correspondeu a 74,6% (± 7,5%) e 63,1% (± 9,8%), aos 5 e 10 anos, respectivamente. As medianas de OS e DFS para os grupos não foram alcançadas. Conclusões: OS e DFS em nosso ambiente é comparável ao relatado na literatura internacional. As medianas de SG e SLD não foram alcançadas, pelo que se pode afirmar que esta doença apresenta, quando realizado tratamento adequado, um bom prognóstico vital aos 10 anos. É necessário um acompanhamento mais longo para determinar a mediana da SG e da SLD dos grupos de estudo.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Laryngeal Neoplasms/epidemiology , Uruguay/epidemiology , Survival Analysis , Survival Rate , Retrospective Studies , Disease-Free Survival , Age and Sex Distribution , Octogenarians
3.
Arch. pediatr. Urug ; 94(1): e301, 2023. ilus
Article in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1420111

ABSTRACT

Se presenta un neonato con hemangioma cérvico facial y posterior diagnóstico de hemangioma subglótico. Los hemangiomas en el período neonatal y los primeros meses de vida requieren una atención cuidadosa. Debido a su patrón de crecimiento y la futura aparición de nuevas lesiones, son considerados imprevisibles en esta etapa. Se encontró una fuerte asociación entre los hemangiomas difusos de localización cérvico facial y los hemangiomas sintomáticos de la vía aérea alta. El riesgo está relacionado con el grado de extensión de la afectación cutánea en un área que incluye la piel de la región mandibular, el mentón, el labio inferior y la parte anterior del cuello. Los hemangiomas infantiles requieren tratamiento cuando presentan riesgo vital y alteraciones funcionales, como compromiso de la vía aérea.


This is the case of a newborn with cervical hemangioma and a subsequent diagnosis of subglottic hemangioma. Hemangiomas in neonates and infants require careful attention. Due to their growth pattern and the potential appearance of new lesions, they are considered unpredictable at this stage. A strong link was found between diffuse cervical-facial and symptomatic upper airway hemangiomas. The risk is related to the extent of skin involvement in a given area, which might include the jaw, chin, lower lip, and front of the neck skin. Infant hemangiomas require treatment when they present life-threatening and functional alterations, such as airway compromise.


Relatamos o caso de um recém-nascido com hemangioma cervical com diagnóstico posterior de hemangioma subglótico. Hemangiomas em recém-nascidos e lactentes requerem atenção cuidadosa. Devido ao seu padrão de crescimento e ao potencial aparecimento de novas lesões, são considerados imprevisíveis nessa fase. Uma forte associação foi encontrada entre hemangiomas cervicofaciais difusos e hemangiomas sintomáticos das vias aéreas superiores. O risco está relacionado à extensão do envolvimento da pele da mandíbula, o queixo, o lábio inferior e a pele da frente do pescoço. Os hemangiomas infantis necessitam de tratamento quando apresentam alterações funcionais ou risco de vida, como comprometimento das vias aéreas.


Subject(s)
Humans , Female , Facial Neoplasms/diagnosis , Laryngeal Neoplasms/diagnosis , Hemangioma/diagnosis , Propranolol/therapeutic use , Infant, Premature , Facial Neoplasms/drug therapy , Laryngeal Neoplasms/drug therapy , Adrenergic beta-Antagonists/therapeutic use , Hemangioma/complications
4.
Acta Medica Philippina ; : 26-31, 2023.
Article in English | WPRIM | ID: wpr-1003630

ABSTRACT

Objective@#We aim to determine the association between preoperative CT scan findings of thyroid cartilage invasion, cricoid cartilage invasion, and paraglottic space involvement with tumor extension to the thyroid gland on final histopathology among patients with laryngeal squamous cell carcinoma (SCC) in a tertiary hospital in the Philippines.@*Methods@#Patients with histopathologically-confirmed laryngeal SCC who underwent total laryngectomy with thyroidectomy while admitted at the public ward of the Department of Otorhinolaryngology, Philippine General Hospital, from January 2013 to December 2019 were included. CT scans were reviewed by 2 blinded independent radiologists. CT scan data including subsite/s involved, thyroid cartilage/cricoid cartilage erosion, paraglottic space involvement, thyroid gland involvement, and thyroid gland involvement on final histopathology were gathered. Clinicopathologic data such as age, T Stage, early tracheostomy, and time between CT scan and surgery were also collected and analyzed. Fisher’s exact test was computed for both clinicopathologic and CT scan data with a significant value having p<0.05. Cramer’s V and phi coefficient were computed for nondichotomous and dichotomous variables, respectively. Odds ratio was also computed for dichotomous variables with p<0.05 on Fisher’s exact test.@*Results@#Fifty-nine (59) men and 4 women were included, aged 43 to 81 years old. Most patients were classified as T3 (n=18) and T4 (n=41) (total=93.7%), with most having transglottic primary tumors (n=29, 46%), and only 8 (12.7%) patients having subglottic tumor involvement on final histopathology. Thyroid cartilage erosion or invasion were noted in 63.4% (n=40) of patients’ CT scans and 58.7% (n=37) of patients’ final histopathology reports. Cricoid cartilage and paraglottic space involvement were often not reported on final histopathology results. Thyroid gland involvement was only noted in the final histopathology reports of 5 patients (7.9%). Significant association between cricoid cartilage findings (p=0.032, Cramer’s V=0.318) or thyroid gland involvement on CT scan (p=0.018, Phi=0.384; OR 13 95% CI 1.797, 94.035) with thyroid gland involvement on final histopathology was noted. The rest of the variables had no significant association with thyroid gland involvement on final histopathology.@*Conclusion@#Cricoid cartilage involvement (erosion or invasion) and thyroid gland involvement on CT scan are associated with thyroid gland involvement on final histopathology in patients with laryngeal SCC. Patients with these CT scan findings may stand to benefit more from thyroidectomy to ensure good margins of resection.


Subject(s)
Laryngeal Neoplasms , Thyroidectomy , Carcinoma , Epithelial Cells
5.
Acta Medica Philippina ; : 97-101, 2023.
Article in English | WPRIM | ID: wpr-998847

ABSTRACT

@#A 61-year-old male diagnosed with laryngeal squamous cell carcinoma presented with hoarseness, progressive dysphagia leading to aspiration, and dyspnea one month after definitive radiation therapy. Examination revealed a diffusely swollen glottis, paralyzed vocal cords, and post-radiation fibrosis. Several glottic biopsies yielded results negative for malignancy and favored radiation-induced changes. When presented with the option of further diagnostic testing with a positron emission tomography (PET) scan or an outright laryngectomy, the patient decided on the latter. Final histopathologic diagnosis was negative for recurrence of malignancy. This case demonstrates treatment dilemmas for patients with laryngeal carcinoma with uncertain recurrence wherein radical surgical management may prove to be a viable option to achieve both diagnostic certainty and ultimate relief of symptoms.


Subject(s)
Laryngeal Neoplasms , Laryngectomy , Radiotherapy
6.
Journal of Central South University(Medical Sciences) ; (12): 165-171, 2023.
Article in English | WPRIM | ID: wpr-971382

ABSTRACT

OBJECTIVES@#Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor of head and neck. Screening of target genes for malignant tumor therapy is one of the focuses of cancer research, with proto-oncogene and tumor suppressor gene as the breakthrough. It has become an urgent need to find the target gene related to the treatment and prognosis of LSCC.This study aims to explore the role of Lin28B and C-myc in LSCC by detecting the expressions of these two proteins and analyze the correlation between the expression of Lin28B and C-myc and clinicopathological features and prognosis of LSCC.@*METHODS@#We detected the expression of Lin28B and C-myc proteins in 102 specimens of LSCC and 90 specimens of adjacent tissues by immunochemistry, and analyzed the correlation between Lin28B and C-myc protein expressions in LSCC as well as the correlation between the expressions of the two proteins and the clinicopathological features of LSCC. At the same time, the Kaplan-Meier method was used to analyze the relation between Lin28B and C-myc protein levels with the postoperative survival rate of LSCC patients.@*RESULTS@#The protein levels of Lin28B and C-myc in the LSCC tissnes were significantly higher than those in the adjacent tissues (both P<0.05),and there was a positive correlation between the expression of Lin28B and C-myc in LSCC (r=0.476, P<0.05). The expression of Lin28B protein was closely related to age, lymph node metastasis, clinical stage, tumor size, and pathological differentiation of LSCC patients (all P<0.05). while the expression of C-myc protein was closely related to lymph node metastasis, clinical stage, tumor size, and pathological differentiation of LSCC patients (all P<0.05). A relevant survival analysis showed that in patients with higher level of Lin28B (P=0.001) or C-myc protein (P<0.001), the postoperative survival rate was relatively low.@*CONCLUSIONS@#Lin28B and C-myc proteins are highly expressed in LSCC with a positive correlation. Furthermore, they are closely related to lymph node metastasis, clinical stage, tumor size, pathological differentiation and prognosis, suggesting that both Lin28B and C-myc might be involved in the occurrence and development of LSCC.


Subject(s)
Humans , Squamous Cell Carcinoma of Head and Neck , Proto-Oncogene Proteins c-myc/metabolism , Laryngeal Neoplasms/diagnosis , Carcinoma, Squamous Cell/genetics , Lymphatic Metastasis , Prognosis , Head and Neck Neoplasms , Biomarkers, Tumor/metabolism , RNA-Binding Proteins/genetics
7.
Cienc. Salud (St. Domingo) ; 7(1): [47], 2023. tab
Article in Spanish | LILACS | ID: biblio-1444350

ABSTRACT

Introducción: el carcinoma de cabeza y cuello comprende un grupo de neoplasias que comparten un origen anatómico similar. Ocupan el sexto lugar mundial entre las neoplasias de todas las localizaciones, y el sitio afectado con mayor frecuencia es la cavidad oral. Ahora se reconoce el rol del virus del papiloma humano como factor independiente en el desarrollo de estas neoplasias. En los últimos 15 años se ha observado un incremento en la incidencia de carcinoma de células escamosas inducido por virus del papiloma humano (VPH). Materiales y métodos: este es un estudio observacional de tipo descriptivo transversal. Se realizó un análisis documental de los expedientes clínicos de los pacientes que cumplan con los criterios de inclusión. Resultados: en este estudio fue encontrada una prevalencia del 14 % del VPH en cánceres laríngeos. El tipo 16 del VPH fue el único identificado y descrito entre los expedientes clínicos de este estudio y, este último, con una prevalencia de un 20 %. Discusión: el VPH puede estar involucrado en el desarrollo de algunos cánceres de laringe y su rol puede ser más predominante en hombres mayores de 50 años.


Introduction: Head and neck carcinoma comprises a group of neoplasms with similar anatomical origins. They occupy the sixth place in the world among the neoplasias of all the locations, and the most affected site is the oral cavity. The role of the Human Papillomavirus as an independent factor in the development of these neoplasms is now recognized. In the last 15 years, an increase in the incidence of squamous cell carcinoma induced by Human Papillomavirus (HPV) has been observed. Methods: This is an observational study of transversal descriptive type. A documental analysis of the clinical files of the patients that meet the inclusion criteria was performed. Results: in this study, a 14 % prevalence of HPV in laryngeal cancers was found. Type 16 HPV was the only one identified and described in the clinical files of this study and the latter with a prevalence of 20 % Discussion: HPV may be involved in the development of some laryngeal cancers and its role may be more predominant in men older than 50 years.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Laryngeal Neoplasms , Papillomavirus Infections , Cross-Sectional Studies , Dominican Republic
8.
Rev. otorrinolaringol. cir. cabeza cuello ; 83(3): 254-258, 2023. ilus
Article in Spanish | LILACS | ID: biblio-1522102

ABSTRACT

Introducción: Las metástasis a distancia de tumores primarios a cuerdas vocales son poco frecuentes. Las metástasis a laringe con mayor frecuencia corresponden a melanomas y carcinomas, afectando principalmente a la región supraglótica. Las metástasis a cabeza y cuello de los carcinomas de células renales (CCR) tienen una incidencia de 14-16%. Se presenta el caso de un paciente con metástasis de carcinoma de células claras renal a cuerdas vocales, cuya importancia recae en que es un caso poco frecuente y no existen reportes similares en el país. Paciente masculino, 57 años, con disfonía de 3 meses de evolución. Nasofibroscopía evidencia lesión polipoídea en cuerda vocal y ventrículo izquierdo. Se realiza microcirugía laríngea, enviando muestra a biopsia diferida, resultando lesión metastásica de CCR células claras. Evaluado por nefrología, se pesquisa tumor renal izquierdo sugerente de CCR. Las metástasis de neoplasias remotas a laringe son infrecuentes. Se considera al CCR el tercero en frecuencia respecto a neoplasias infraclaviculares. Éstas se pueden presentar hasta 10 años después del tratamiento del primario. Se recomienda seguimiento a largo plazo y énfasis a nuevos síntomas en región de cabeza y cuello, teniendo en consideración antecedente de CCR en pacientes con disfonía y lesiones polipoídeas en cuerdas vocales.


Introduction: The metastasis of distant site primary tumors to the vocal cords is infrequent. The most frequent source of metastasis to the larynx is melanomas and carcinomas, mainly affecting the supraglottic region. The metastasis to the head and neck of renal cell carcinomas (RCC) has an incidence of 14-16%. To present a case of metastasis of clear renal cell carcinoma to the vocal cords, since it is very infrequent, and there are no similar reports in the country. A male patient, 57 years old, presenting dysphonia for a duration of 3 months. Nasofibroscopy showed a polypoid lesion in the left vocal cord and ventricle. Larynx microsurgery was performed, and a sample was sent for biopsy, which reported a metastatic lesion of RCC clear cells. When assessed by nephrology, a left renal tumor is found, suggesting RCC. The metastasis of distant site neoplasias are infrequent. RCC is considered the third in frequency concerning to infraclavicular neoplasias. These can present up to 10 years after the treatment of the primary. Long term follow-up is recommended, and an emphasis on new symptoms in the head and neck region, considering the history of RCC in patients with dysphonia and polypoid lesions in vocal cords.


Subject(s)
Humans , Male , Middle Aged , Vocal Cords/pathology , Carcinoma, Renal Cell/secondary , Laryngeal Neoplasms/secondary , Polyps/pathology , Carcinoma, Renal Cell/pathology , Laryngeal Neoplasms/pathology
9.
j.tunis.ORL chir. cerv.-fac ; 49: 25-32, 2023. figures, tables
Article in French | AIM | ID: biblio-1428042

ABSTRACT

Discuter à travers une étude descriptive ainsi qu'une revue de la littérature, les particularités cliniques, démographiques et pronostiques des patients de moins de 45 ans, ayant un cancer du larynx. Materiels et Methodes: Il s'agit d'une étude rétrospective descriptive portant sur des patients atteints d'un cancer du larynx, âgés de moins de 45 ans suivis dans le service d'ORL et de chirurgie cervico-faciale du CHU Habib Bourguiba Sfax durant la période s'étendant de 1989 à 2018. Resultats: Nous avons trouvé 31 patients avec une prédominance masculine. Un cancer dans la famille a été trouvé dans 16,12% des cas sans corrélation statistique avec le stade avancé de la maladie. Une importante intoxication tabagique a été trouvée (96%). Trois patients avaient une laryngite chronique et un patient une papillomatose laryngée avec des lésions de dysplasie. Les motifs de consultation étaient dominés par la dysphonie (87%). La maladie a été classée en stades avancés dans 70% des cas. Le traitement chirurgical était préconisé chez 87% des patients et la préservation fonctionnelle chez 38,7%. Le taux de survie globale et sans maladie étaient respectivement, à un an de 96% et 84%, à 3 ans de 87% et 76%, et à 5 ans de 77% et 75% Conclusion: Notre travail n'a pas permis de retenir de différence en termes de données cliniques, de l'évolution de la maladie, de l'algorithme thérapeutique ni du pronostic entre les jeunes patients et les plus âgés


Subject(s)
Humans , Algorithms , Laryngeal Neoplasms , Correlation of Data , Prognosis , Incidence
10.
Int. j. morphol ; 40(6): 1587-1593, dic. 2022. ilus, tab, graf
Article in English | LILACS | ID: biblio-1421824

ABSTRACT

SUMMARY: This study is to investigate the role and mechanism of RGD peptide in laryngeal cancer stem cells (CSCs). Laryngeal cancer CD133+Hep-2 CSCs were sorted by flow cytometry. RGD peptide was co-cultured with sorted laryngeal CSCs. Cell proliferation was detected with CCK-8 assay. The mRNA levels of VEGF/VEGFR2/STAT 3/HIF-1α were detected with RT-PCR. The proteins of VEGF/ VEGFR2/STAT 3/HIF-1α were detected with Western blot. The sorted CSCs were inoculated into nude mice. Tumor volume was measured. Integrin αvβ3 expression in tumor tissues was analyzed with immunohistochemistry. The results showed that the ratio of CD133+ CSCs to the total number of cells was 1.34±0.87 %, while CD133-non-tumor stem cells accounted for 95.0±5.76 %. The sorted cancer stem cells grew well. The RGD peptide significantly inhibited the proliferation of CD133+Hep-2 laryngeal CSCs in a dose-dependent manner. The RGD peptide significantly inhibited the mRNA of VEGFR2, STAT3 and HIF-1α in laryngeal CSCs in a concentration-dependent manner. Consistently, the RGD peptide significantly inhibited the protein expression of VEGFR2, STAT3 and HIF-1α in laryngeal CSCs in a dose-dependent manner. At the same time, in vivo tumor experiments showed that the RGD peptide significantly inhibited tumor volume but not the body weight. Furthermore, RGD peptide significantly inhibited the expression of tumor angiogenesis-related protein integrin αvβ3. Our findings demonstrate that RGD peptide inhibits tumor cell proliferation and tumor growth. The underlying mechanism may that RGD inhibits tumor angiogenesis-related signaling pathways, thus affecting the tumor angiogenesis, and decreasing the progression of human laryngeal CSCs.


Este estudio se realizó para investigar el papel y el mecanismo del péptido RGD en las células madre del cáncer de laringe (CSC). Las CSC CD133+Hep-2 de cáncer de laringe se clasificaron mediante citometría de flujo. El péptido RGD se cocultivó con CSC laríngeas clasificadas. La proliferación celular se detectó con el ensayo CCK-8. Los niveles de ARNm de VEGF/VEGFR2/ STAT 3/HIF-1α se detectaron con RT-PCR. Las proteínas de VEGF/ VEGFR2/STAT 3/HIF-1α se detectaron con Western blot. Las CSC clasificadas se inocularon en ratones nudos. Se midió el volumen del tumor. La expresión de integrina αvβ3 en tejidos tumorales se analizó con inmunohistoquímica. Los resultados mostraron que la proporción de CSC CD133+ con respecto al número total de células fue de 1,34 ± 0,87 %, mientras que las células madre no tumorales CD133 representaron el 95,0 ± 5,76 %. Las células madre cancerosas clasificadas crecieron bien. El péptido RGD inhibió significativamente la proliferación de CSC laríngeas CD133+Hep-2 de una manera dependiente de la dosis. El péptido RGD inhibió significativamente el ARNm de VEGFR2, STAT3 y HIF-1α en CSC laríngeas de manera dependiente de la concentración. De manera consistente, el péptido RGD inhibió significativamente la expresión proteica de VEGFR2, STAT3 y HIF-1α en CSC laríngeas, de manera dependiente de la dosis. Al mismo tiempo, los experimentos con tumores in vivo mostraron que el péptido RGD inhibía significativamente el volumen del tumor pero no el peso corporal. Además, el péptido RGD inhibió significativamente la expresión de la proteína integrina αvβ3 relacionada con la angiogénesis tumoral. Nuestros hallazgos demuestran que el péptido RGD inhibe la proliferación de células tumorales y el crecimiento tumoral. El mecanismo subyacente puede ser que RGD inhiba las vías de señalización relacionadas con la angiogénesis tumoral, afectando así la angiogénesis tumoral y disminuyendo la progresión de las CSC laríngeas humanas.


Subject(s)
Animals , Mice , Oligopeptides/metabolism , Neoplastic Stem Cells , Laryngeal Neoplasms , RNA, Messenger/antagonists & inhibitors , Immunohistochemistry , Blotting, Western , DNA Primers , Reverse Transcriptase Polymerase Chain Reaction , Integrin alphaVbeta3/antagonists & inhibitors , Vascular Endothelial Growth Factor A/antagonists & inhibitors , Vascular Endothelial Growth Factor A/genetics , Cell Proliferation , Flow Cytometry , Neovascularization, Pathologic
11.
Rev. otorrinolaringol. cir. cabeza cuello ; 82(4): 415-422, dic. 2022. ilus, tab, graf
Article in Spanish | LILACS | ID: biblio-1431930

ABSTRACT

Introducción: Las leucoplaquias laríngeas (LL) pueden corresponder a lesiones precancerosas. La aproximación diagnóstica es endoscópica y en caso de persistir, se debe estudiar con biopsia. Objetivo: Describir las características biodemográficas, clínicas, endoscópicas, histológicas y evolutivas de pacientes diagnosticados con leucoplaquias glóticas. Material y Método: Estudio prospectivo no-concurrente de pacientes diagnosticados con leucoplaquias glóticas en la Unidad de Voz del Departamento de Otorrinolaringología de la Pontificia Universidad Católica de Chile, entre 2012 y 2019. Resultados: Se incluyeron 29 pacientes, 65,5% hombres, con edad promedio de 61 años y seguimiento promedio de 21,1 meses. El principal motivo de consulta fue disfonía, en un 86,2% de los casos. El 38% presentó compromiso del pliegue vocal (PV) izquierdo, 24,1% derecho, 24,1% bilateral y 13,8% bilateral incluyendo comisura anterior. El 41,4% de las lesiones comprometían más del 50% del PV y 68% presentaba una onda mucosa alterada en la estroboscopia. Un 89,7% requirió biopsia, identificando carcinoma en 26,9%, displasia en 34,6% y otro diagnóstico en 38,5%. El 25,9% presentó recurrencias, del cual 28,6% progresó a cáncer. Se identificó asociación significativa en un análisis bivariado entre la edad (p = 0,030) y compromiso mayor al 50% del PV (p = 0,016) con displasia de alto riesgo o cáncer. En el análisis multivariado, solo la edad mostró ser significativa (p = 0,038; OR 1,27; IC 95% 1,01-1,59). Conclusión: El estudio de las LL es esencial para el diagnóstico precoz de cáncer laríngeo. La edad y el compromiso mayor al 50% del PV en la estroboscopia podría predecir un riesgo mayor de displasia de alto riesgo o cáncer.


Introduction: Laryngeal leukoplakia (LL) may correspond to precancerous lesions. The diagnostic approach is endoscopic, and if LL persist, a biopsy should be performed. Aim: To describe the biodemographic, clinical, endoscopic, histological, and developmental characteristics of patients diagnosed with glottic leucoplakia. Material and Method: Prospective non-concurrent study of patients diagnosed with glottic leukoplakia in the Voice Unit at the Otolaryngology Department of the Pontificia Universidad Catolica de Chile, between 2012 and 2019. Results: Twenty-nine patients were included, 65.5% men, with an average age of 61.7 years, and average follow-up of 21.1 months. Dysphonia was the chief complaint, present in 86.2% of the cases. The left vocal fold (VF) was involved in 38.0%, right in 24.1%, bilateral in 24.1%, and bilateral including anterior commissure in 13.8%. Only 41.4% compromised over 50% of the VF and 68.0% presented an altered mucosal wave in the videostroboscopy. A biopsy was performed in 89.7%, identifying carcinoma in 26.9%, dysplasia in 34.6% and other diagnosis in 38.5%. During follow-up 25.9% recurred, of which 28.6% progressed to cancer. A significant association was found in the bivariate analysis between age (p = 0.030) and extension over 50% of the VF (p = 0.016) with high-risk dysplasia or cancer. In the multivariate analysis only, the age was found to be significative (p = 0.038; OR 1.27; CI 95% 1.01-1.59). Conclusions: A thorough evaluation is essential in LL, favoring an early diagnosis for laryngeal cancer. Age and an involvement greater than 50% of the VF in the videostroboscopy could predict an increased possibility for high-risk dysplasia or cancer.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Vocal Cords/pathology , Laryngeal Neoplasms/diagnosis , Leukoplakia/diagnosis , Laryngeal Neoplasms/pathology , Leukoplakia/pathology
12.
Rev. habanera cienc. méd ; 21(4)ago. 2022.
Article in Spanish | LILACS, CUMED | ID: biblio-1441924

ABSTRACT

Introducción: El carcinoma verrucoso es una variante poco común de carcinoma escamoso bien diferenciado, que carece de rasgos citológicos de malignidad, tiene un crecimiento lento, es infiltrativo, pero no metastatiza. Objetivo: Identificar los aspectos clínico-histopatológicos y terapéuticos de una variante inusual de tumor laríngeo. Presentación del caso: Se reporta un nuevo caso de carcinoma verrucoso, paciente masculino de 78 años que se presentó en la consulta de Otorrinolaringología del Hospital Docente general "Enrique Cabrera" con disfonía. Se realizó laringoscopia indirecta y se detectó lesión exofítica sugestiva de neoplasia. Se tomaron tres biopsias, solo la última, fue de utilidad para diagnosticar un carcinoma verrucoso. Se trató con radiaciones y cirugía. El paciente presenta un intervalo libre de enfermedad después de ocho años de seguimiento. Conclusiones: Para el diagnóstico del carcinoma verrucoso es necesario biopsias profundas y la acuciosidad del patólogo para llegar al diagnóstico. Se hace énfasis en la importancia del trabajo en el contexto del grupo multidisciplinario(AU)


Introduction: Verrucous carcinoma is an uncommon variant of a well differentiated squamous carcinoma that lacks cytological features of malignancy and is often slow-growing, infiltrative, but not metastatic. Objective: To identify the clinical, histopathologic and therapeutic aspects of an unusual variant of laryngeal tumor. Case presentation: A 78-year-old male patient who attended the otorhinolaryngology consultation at "Enrique Cabrera" General Teaching Hospital with dysphonia is reported as a new case of Verrucous carcinoma. Indirect laryngoscopy was performed and an exophytic lesion suggestive of neoplasia was detected. Three biopsies were taken, but only the last one was useful to diagnose a Verrucous carcinoma. It was treated with radiation and surgery. The patient has a disease-free survival after eight years of follow-up. Conclusions: Deep biopsies performed by a skillful pathologist are necessary to reach the diagnosis of Verrucous carcinoma. Emphasis is placed on the importance of working in the context of a multidisciplinary team(AU)


Subject(s)
Humans , Male , Aged , Laryngeal Neoplasms/diagnosis , Carcinoma, Verrucous/pathology
13.
Rev. otorrinolaringol. cir. cabeza cuello ; 82(2): 203-206, jun. 2022. ilus
Article in Spanish | LILACS | ID: biblio-1389839

ABSTRACT

Resumen El neurofibroma laríngeo es poco frecuente, representa menos del 0,1% de las neoplasias benignas de la laringe. Puede presentarse aislado, o más comúnmente asociado a neurofibromatosis tipo I. Se presenta el caso de un paciente varón de 40 años, ya diagnosticado de neurofibromatosis tipo I, que presenta masa supraglótica submucosa asintomática, diagnosticada como hallazgo casual en una intubación por una cirugía previa programada.


Abstract Laryngeal neurofibroma is rare, representing less than 0.1% of benign tumors of the larynx. It can occur in isolation or more commonly associated with type I neurofibromatosis. The case of a 40-year-old male patient, already diagnosed with type I neurofibromatosis, is presented with an asymptomatic submucosal supraglottic mass, diagnosed as a chance finding in intubation due to a previous scheduled surgery.


Subject(s)
Humans , Male , Adult , Laryngeal Neoplasms/surgery , Laryngeal Neoplasms/diagnostic imaging , Neurofibromatosis 1/diagnostic imaging , Larynx/surgery , Magnetic Resonance Imaging/methods , Laser Therapy/methods
14.
Article in Spanish | LILACS | ID: biblio-1389840

ABSTRACT

Resumen El rabdomiosarcoma laríngeo es un cáncer infrecuente en cabeza y cuello, y aún más en adultos. Describimos el caso de un varón de 55 años con un rabdomiosarcoma del músculo cricoaritenoideo posterior izquierdo tratado mediante laringectomía total y linfadenectomía funcional bilateral.


Abstract Laryngeal rhabdomyosarcoma is an uncommon cancer in head and neck, especially in adults. We report a 55 years old male with a rhabdomyosarcoma from the left posterior cricoarytenoid muscle treated with a total laryngectomy and double functional cervical lymphadenectomy.


Subject(s)
Humans , Male , Middle Aged , Laryngeal Neoplasms/surgery , Laryngeal Neoplasms/diagnosis , Rhabdomyosarcoma, Embryonal/surgery , Rhabdomyosarcoma, Embryonal/diagnosis , Larynx/surgery , Tomography, X-Ray Computed/methods , Laryngeal Neoplasms/therapy , Rhabdomyosarcoma, Embryonal/therapy , Drug Therapy/methods , Laryngectomy/methods
15.
Rev. otorrinolaringol. cir. cabeza cuello ; 82(2): 212-215, jun. 2022. ilus
Article in Spanish | LILACS | ID: biblio-1389841

ABSTRACT

Resumen El tumor miofibroblástico inflamatorio (TMI) es una patología muy poco frecuente. Los TMI localizados en laringe pueden ocasionar disfonía o sensación de cuerpo extraño. El diagnóstico se realiza a través de pruebas de imagen y visualización directa con obtención de muestras para estudio histopatológico. Presentamos el caso de una mujer de 43 años, con antecedentes personales de carcinoma indiferenciado de nasofaringe, tratado con radioterapia y quimioterapia, que acude a revisiones periódicas en consulta de otorrinolaringología. Se objetiva por nasofibroscopia una lesión rugosa en cuerda vocal izquierda. Se realiza biopsia con fibroscopio de canal, compatible con tumoración fusocelular atípica, con áreas celulares y mixoides, sospechosa de malignidad, con necesidad de completar estudio inmunohistoquímico. En comité de tumores de cabeza y cuello se decide cirugía programada (laringectomía supracricoidea con cricohioidoepiglotopexia) y posterior tratamiento adyuvante con quimioterapia y/o radioterapia, según resultados del estudio histopatológico. Como conclusión, el TMI es una patología que se encuentra predominantemente en el pulmón, siendo rara la afectación laríngea. Su pronóstico es favorable y el diagnóstico histopatológico es de vital importancia. El diagnóstico correcto va seguido de una escisión local amplia para prevenir la recurrencia, sin embargo, el tratamiento debe adaptarse a la ubicación del tumor y al estado del paciente.


Abstract Inflammatory myofibroblastic tumor (IMT) is a very rare pathology. IMTs located in the larynx can cause dysphonia or foreign body sensation. The diagnosis is made through imaging tests and direct visualization and confirmation with samples for histopathological study. We present the case of a 43-year-old woman with a personal history of undifferentiated carcinoma of the nasopharynx treated with radiotherapy and chemotherapy, who attended periodic check-ups in an otolaryngology clinic. A rough granulomatous lesion was observed by nasofibrolaryngoscopy in the left vocal cord. A canal fibroscope biopsy is performed, compatible with an atypical spindle cell tumor, with cellular and myxoid areas, suspicious of malignancy, requiring an immunohistochemical study to be completed. The head and neck tumor committee decides on scheduled surgery (supracricoid laryngectomy with cricohyoidoepiglottopexy) and subsequent adjuvant treatment with chemotherapy and/or radiotherapy, according to the results of the histopathological study. As a conclusion finally, the IMT is a pathology found predominantly in the lung, laryngeal involvement being rare. Its prognosis is favorable and the histopathological diagnosis is of vital importance to be able to be differentiated from other malignant neoplasms. The correct diagnosis is followed by a wide local excision to prevent recurrence, however, treatment must be tailored to the location of the tumor and the condition of the patient.


Subject(s)
Humans , Female , Adult , Laryngeal Neoplasms/pathology , Laryngeal Neoplasms/diagnostic imaging , Immunohistochemistry , Tomography, X-Ray Computed , Laryngeal Neoplasms/surgery , Treatment Outcome , Myofibroblasts/pathology
16.
Rev. Ciênc. Méd. Biol. (Impr.) ; 21(1): 31-39, maio 05,2022. tab, ilus
Article in Portuguese | LILACS | ID: biblio-1370551

ABSTRACT

Objetivo: analisar a tendência da mortalidade por câncer de laringe no Brasil e regiões no período de 1980 a 2019. Metodologia: trata-se de um estudo ecológico de série temporal. Os dados foram provenientes do SIM/DATASUS, e foram estratificados segundo faixa etária, ano, local e sexo. Foi calculada a taxa padronizada de mortalidade (TPM) e utilizada para análise de tendência, por intermédio do modelo JoinPoint. Resultados: foi possível observar que o Brasil apresentou alto número de mortes em toda série temporal com cerca de 112.693 óbitos. No tocante as suas regiões destacaram-se o Sudeste, seguido do Sul com 62.111 e 23.356 mortes pelo agravo, respectivamente. Dentre as faixas etárias analisadas, o grupo de 60-79 anos apresentou predominância em ambos os sexos, com 56.947 ocorrências. Já para o sexo, o masculino apresentou mais de 98 mil mortes em detrimento de mais de 13 mil para o feminino, uma diferença 85,6%. Avaliando a tendência, o Brasil apresentou estabilidade em boa parte da série temporal, com diminuição significativa a partir de 2009 (APC -1,6). Nas regiões, o Nordeste apresentou a maior tendência de crescimento (AAPC 2,7) e o Norte também demonstrou crescimento a partir de 1990 (APC 1,8), as demais apresentaram redução considerável e significativa, exceto Centro-oeste que não apresentou JoinPoints. Conclusão: ressalta-se a importância da revisão, melhoria e até implementação de novas políticas de rastreamento a fim de aumentar o quantitativo de diagnóstico precoce e evitar, a longo prazo, a mortalidade.


Objective: to analyze the trend of mortality from laryngeal cancer in Brazil and regions from 1980 to 2019. Methods: this is an ecological time series study. Data came from SIM/DATASUS, and were stratified according to age group, year, location and sex. Age Standard Rates (ASR) were calculated and these were used for trend analysis, performed using the Joinpoint model. Results: it was possible to observe that Brazil had a high number of deaths in the entire time series, with about 112,693 deaths. Regarding its regions, the Southeast stood out, followed by the South with 62,111 and 23,356 deaths from the disease, respectively. Among the age groups analyzed, the 60-79 age group showed a predominance in both sexes, with 56,947 occurrences. As for gender, males had more than 98 thousand deaths at the expense of more than 13 thousand for females, a difference of 85.6%. Assessing the trend, Brazil showed stability in most of the time series, with a significant decrease as of 2009 (APC -1.6). In the regions, the Northeast showed the greatest growth trend (AAPC 2.7) the North also showed growth from 1990 (APC 1.8), the others showed a considerable and significant reduction, except for the Midwest, which did not present Joinpoints. Conclusion: we emphasize the importance of reviewing, improving and even implementing new screening policies in order to increase the number of early diagnoses and prevent, in the long term, mortality.


Subject(s)
Humans , Male , Female , Aged , Laryngeal Neoplasms , Time Series Studies , Ecological Studies , Larynx , Mortality
18.
Chinese Journal of Epidemiology ; (12): 702-708, 2022.
Article in Chinese | WPRIM | ID: wpr-935447

ABSTRACT

Objective: We aim to evaluate the morbidity and mortality of cancer attributable to human papillomavirus (HPV) infection in China in 2016. Methods: Based on the cancer incidence and mortality rates, national population data, and population attributable fraction (PAF) in China, we calculated the number of incidence and death cases attributed to HPV infection in different areas, age groups, and gender in China in 2016. The standardized incidence and mortality rates for cancer attributed to HPV infection were calculated by using Segi's population. Results: In 2016, a total of 124 772 new cancer cases (6.32 per 100 000) were attributed to HPV infection in China, including 117 118 cases in women and 7 654 cases in men. Of these cancers, cervical cancer was the most common one, followed by anal cancer, oropharyngeal cancer, penile cancer, vaginal cancer, laryngeal cancer, oral cancer, and vulvar cancer. A total of 41 282 (2.03 per 100 000) deaths were attributed to HPV infection, of which 37 417 occurred in women and 3 865 in men. Most deaths were caused by cervical cancer, followed by anal cancer, oropharyngeal cancer, penile cancer, laryngeal cancer, vaginal cancer, oral cancer, and vulvar cancer. The incidence and mortality rates of cervical cancer increased rapidly with age, peaked in age group 50-54 years, then decreased obviously. The morbidity and mortality rates of non-cervical cancer increased with age. The cancer case and death numbers in rural areas (57 089 cases and 19 485 deaths) were lower than those in urban areas (67 683 cases and 21 797 deaths). However, the age-standardized incidence rate (ASIR) and age-standardized mortality rate (ASMR) of cervical cancer were higher in rural areas than in urban areas. There were no significant differences in ASIR and ASMR of non-cervical cancers between urban areas and rural areas. Conclusions: The incidence of cancers attributed to HPV infection in China was lower than the global average, but the number of incidences accounted largely, furthermore there is an increasing trend of morbidity and mortality. The preventions and controls of cervical cancer and male anal cancer are essential to contain the increases in cancer cases and deaths attributed to HPV infection.


Subject(s)
Female , Humans , Male , Middle Aged , China/epidemiology , Incidence , Laryngeal Neoplasms , Mouth Neoplasms , Oropharyngeal Neoplasms/epidemiology , Papillomavirus Infections/epidemiology , Penile Neoplasms/epidemiology , Registries , Uterine Cervical Neoplasms/epidemiology , Vaginal Neoplasms , Vulvar Neoplasms
19.
Chinese Journal of Otorhinolaryngology Head and Neck Surgery ; (12): 565-571, 2022.
Article in Chinese | WPRIM | ID: wpr-936257

ABSTRACT

Objective: To explore the feasibility and perioperative safety of transoral robotic surgery with da Vinci Xi platform for pharyngolaryngeal tumors. Methods: A retrospective analysis was performed on 55 consecutive cases with resection of pharyngolaryngeal tumors by transoral robotic surgery with da Vinci Xi platform from July 27, 2020 to October 31, 2021 in the Department of Head and Neck Surgery, Fudan University Eye, Ear, Nose and Throat Hospital, including 44 males and 11 females, aged 25-79 years. There were 41 cases of oropharyngeal tumors, 9 cases of parapharyngeal space tumors, 2 cases of laryngeal tumors, 2 cases of hypopharyngeal tumors and 1 case of retropharyngeal space tumor. Operative time, intraoperative blood loss, postoperative hospital stay, perioperative tracheotomy, nasal feeding, hemorrhage and other complications were analyzed. Results: Of the 55 patients, 54 received resection of pharyngolaryngeal tumors by da Vinci robot through oral approach, and only 1 case of pyriform sinus carcinoma underwent a conversion to open surgery due to poor exposure of lower margin. The average surgical time for the patients with transoral robotic surgeries was 64.4 min, the average blood loss was 24.8 ml, the average postoperative hospital stay was 6.9 d, and the average oral feeding time was 11.1 d. Seventeen patients (30.9%) underwent preventive tracheotomy during surgery. Among 38 cases of laryngeal cancer, 28 underwent simultaneously neck dissection. No serious complications occurred in all patients during and after operation. The follow-up time was 1-15 months. Aside from 1 patient had a relapse 10 months after surgery, other patients had no recurrence or metastasis. Conclusion: Transoral robotic surgery with da Vinci Xi is safe, effective and minimally invasive for resection of pharyngolaryngeal tumors under reasonable indications.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Feasibility Studies , Laryngeal Neoplasms/surgery , Pharyngeal Neoplasms/surgery , Retrospective Studies , Robotic Surgical Procedures/methods
20.
Chinese Journal of Otorhinolaryngology Head and Neck Surgery ; (12): 168-177, 2022.
Article in Chinese | WPRIM | ID: wpr-936190

ABSTRACT

Objective: To analyze the classification and functions of cell subsets in laryngeal carcinoma and metastatic lymph nodes, and to explore the evolution trajectory of epithelial cells to tumor cells. Methods: Single-cell RNA sequencing was performed on 5 cases of laryngeal cancer, matched metastatic lymph nodes and 3 normal tissues. Patients were admitted to Ningbo Medical Center Lihuili Hospital from October 22, 2019 to December 16, all patients were male, aged 53-70 years old. Cell subsets of the above-mentioned tissues were analyzed by the Seurat, and the biological functions of cell subpopulation were investigated by functional enrichment analysis. Malignant epithelial cells were identified using copy number variation (CNV). The evolutionary trajectory of epithelial cells to cancer cells was analyzed by cell trajectory analysis, and cancerous transitional cells were identified. The highly expressed genes in transitional cells were analyzed by the FindAllMarker of the Seurat and verified by immunohistochemistry. Results: A total of 66 969 high-quality cells were obtained in 9 major clusters: epithelial cells, T cells, B cells, fibroblasts, endothelial cells, myeloid cells, mast cells, plasmacytoid dendritic cells and nerve cells. The first 5 cell clusters were divided into 8, 6, 4, 3 and 2 subgroups, respectively. Four epithelial cell subsets (C0, C1, C2 and C5) were derived from tumor tissues and metastatic lymph nodes, and had high levels of CNV and tumor cell content. Cell trajectory analysis showed that the evolution trajectory of epithelial cells was from normal epithelial subpopulation C4 to early cancerous cell population C0, which differentiated into three major malignant cell subsets C1, C3, and C5. Epithelial cell C0 may represent the transitional cell population of carcinogenesis, and were enriched in biological processes such as epithelial-mesenchymal transformation and angiogenesis. C0 highly expressed sulforaphane (SFN) which may be related to the occurrence and development of cancer. Immunohistochemistry confirmed that SFN was highly expressed in tumor tissues and metastatic lymph nodes compared with paracancerous tissues. Conclusion: Single-cell sequencing may be used to elucidate the diversity of cells and functions in laryngeal carcinoma tissues and metastatic lymph nodes, and cell population C0 plays a key role in the evolution of cells.


Subject(s)
Aged , Humans , Male , Middle Aged , Carcinoma, Squamous Cell/pathology , DNA Copy Number Variations , Endothelial Cells/pathology , Laryngeal Neoplasms/pathology , Lymph Nodes/pathology
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