Results: 1533

Leiomiomatosis esofágica difusa gigante. Reporte de caso

Introducción: La leiomiomatosis esofágica es una neoplasia benigna con una incidencia dentro de los tumores del esófago extremadamente baja y en ocasiones difícil de categorizar como neoplasia o miopatía. Caso clínico: Se reporta el caso de una joven de 24 años que consultó por disfagia pro- gres...

Análise imuno-histoquímica de fatores relacionados à resistência terapêutica em neoplasias de glândula salivar
Immunohistochemical analysis of factors related to therapeutic resistance in salivary gland neoplasms

Introdução: A resistência terapêutica no câncer é um processo complexo e multifatorial, no qual os tumores são intrinsecamente resistentes às terapias ou adquirem resistência ao longo do tratamento. Nesse contexto, destaca-se o papel dos transportadores ABC (uma grande família de proteínas tra...

Síncope como presentación clínica de linfoma cardiaco: reporte de caso

El linfoma cardiaco primario, un tipo extremadamente raro de linfoma no Hodgkin de células B, presenta una incidencia aproximada de 0.02-2% entre los tumores cardíacos malignos. Se asocia frecuentemente con manifestaciones como alteraciones del ritmo cardíaco, derrame pericárdico refractario y masas ...

Neuroprotective Potential of a Novel Soluble Guanylate Cyclase Stimulator the Riociguat Alone or in a Combination Manner with Resveratrol in Experimental Stroke Model in Rats

Int. j. morphol; 42 (4), 2024
SUMMARY: In this study we aimed to examine the effect of novel vasodilatory drug Riociguat co-administration along resveratrol to recover neurodegeneration in experimental stroke injury. For that purpose, thirty-five adult female rats were divided into five groups (Control, MCAO, MCAO + R, MCAO + BAY, MC...

Mycobacterium tuberculosis bacilli in oral biopsies containing granulomatous inflammation with caseous necrosis

J. Oral Diagn; 9 (), 2024
Objetive: This cross-sectional and retrospective study aimed to investigate the presence of Mycobacterium tuberculosis bacillus in formalin-fixed paraffin-embedded (FFPE) oral samples that contained granulomas with caseous necrosis. Methods: FFPE biopsies that showed granulomas with caseous necrosis, sug...

Immunohistochemical expression of p53, ki-67, tenascin, and fibronectin in giant cell fibroma and traumatic fibroma of the oral mucosa

J. Oral Diagn; 9 (), 2024
Objective: This study aimed to compare the immunoexpression of p53, ki-67, tenascin, and fibronectin between giant cell fibroma (GCF) and traumatic fibroma (TF), in order to explore a benign neoplastic or a reactive nature of GCF. Methods: A cross-sectional study was conducted. Samples of GCF and TF were...

Diagnosis of HPV-associated oropharyngeal squamous cell carcinoma in a middle-income country: report of two new cases

J. Oral Diagn; 9 (), 2024
Human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC) is a distinct subset characterized by better treatment responses and higher survival rates. Clinical and morphological aspects are crucial for diagnosis. Here we report two additional cases of HPV-associated OPSCC. Case 1...

Clinicopathological and immunohistochemical study of canalicular adenoma

J. Oral Diagn; 9 (), 2024
Objective: To evaluate the clinicopathological and immunohistochemical features of an original series of canalicular adenoma. Methods: Cases diagnosed as canalicular adenoma from a single center were retrospectively retrieved and clinical data collected from patients’ charts. The histopathological feat...

Leiomiomatosis pulmonar benigna metastatizante: una causa rara de nódulos pulmonares. Reporte de caso

Rev. colomb. neumol; 36 (1), 2024
La leiomiomatosis metastatizante benigna (LMB) es una condición rara. Fue descrita por primera vez por Forkel en 1910 y hasta el momento se han reportado al menos 150 casos en la literatura. Ocurre por la metástasis y proliferación de tejido muscular liso, a partir de un mioma uterino. A nivel imageno...

Carcinoma mediastinal de célula pequeña primario

Rev. colomb. neumol; 36 (1), 2024
El carcinoma neuroendocrino de célula pequeña mediastinal es una forma rara de carcinoma neuroendocrino. El diagnóstico se sospecha por imágenes y se confirma por patología y positividad de marcadores de inmunohistoquímica (IH). Estos tumores son agresivos y su recurrencia y metástasis complican s...