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Vol. 14. Issue 4.
Pages 234-239 (January 2010)
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Vol. 14. Issue 4.
Pages 234-239 (January 2010)
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Carcinoma adenoescamoso primario de vesícula biliar. Reporte de un nuevo caso y consideraciones sobre su etiología
Primary Adenosquamous Carcinoma of Gallbladder. A Case Report and Considerations on its Etiology
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Alfredo Romero
Corresponding author
aromero@cancer.gov.co

Correspondencia: Alfredo Ernesto Romero Rojas, Grupo de Patología, Instituto Nacional de Cancerología, Av. 1a No. 9-85, Bogotá, D.C., Colombia. Tel.:éfono: 334 1997.
, Óscar Messa, Sandra Chinchilla
Grupo de Patología, Instituto Nacional de Cancerología, Bogotá, D.C., Colombia
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Resumen

El carcinoma adenoescamoso primario de vesícula biliar (CAEVB), es una neoplasia infrecuente cuya etiología y comportamiento biológico no están totalmente aclarados. Describimos un caso de un paciente masculino con un carcinoma adenoescamoso infiltrante primario de vesícula biliar diagnósticado en una colecistectomía por colelitiasis. Morfológicamente se encontró asociado a los elementos glandulares y escamosos malignos, la presencia de displasia de bajo y alto grado del epitelio glandular y metaplasia escamosa entre las zonas glandulares y escamocelulares, que permiten hacer el diagnostico de este tipo de carcinoma. El estudio de inmunohistoquímica mostraba marcadores tanto de diferenciación glandular como escamosa. Por tratarse de una variante infrecuente de Carcinoma de vesícula biliar reportamos este caso por las dificultades que genera su diagnóstico. Nuestras observaciones sugieren que se trata de un adenocarcinoma con áreas de metaplasia escamosa y posterior transformación maligna de los elementos escamosos.

Palabras clave:
vesícula biliar
carcinoma adenoescamoso
carcinoma de células escamosas
Abstract

The adeno-squamous gallbladder carcinoma is a frequent neoplasm with blurred etiology and biological course. A case report is presented from a male with an incidental finding of a gallbladder carcinoma diagnosed during a cholecystectomy. Associated to malignant glandular and squamous morphological findings, low grade dysplasia and squamous metaplasia were observed, allowing the final diagnosis. Immunohistochemistry analyses revealed both glandular and squamous differentiation biomarkers. The report of a rare gallbladder carcinoma illustrates difficulties for proper diagnosis. The analysis suggests an adenocarcinoma with squamous metaplasia areas that evolved towardsthe malignant transformation of squamous components.

Key words:
Gallbladder
carcinoma
adenosquamous
carcinoma
squamous cell
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