Adenoma papilar del conducto cístico: una afección infrecuente: reporte de un caso

Papillary adenoma of the biliary ducts is a rare benign tumor, that often present as obstructive jaundice and abdominal pain. Most of the tumors are localized in the distal main bile duct and very uncommonly are observed in the cystic duct. These tumors has been associated to chronic inflammation and genetic disorders progressing from adenoma to carcinoma. We report a case of a 88 years old woman presenting epigastric and right upper quadrant abdominal pain. Endoscopic retrograde cholangiopancreatography showed a polypoid lesion arising from the cystic duct and extending into the common bile duct. A partial resection was performed and samples of the tumor tissue were obtained during this procedure. Histology confirmed a papillary adenoma of the biliary duct. A review of literature is presented. El adenoma papilar de la via biliar es un tumor benigno infrecuente que se presenta habitualmente como un cuadro de ictericia obstructiva y dolor abdominal. La mayoria se localiza en la via biliar distal comun y en raras ocasiones en el conducto cistico. Es probablemente el resultado de un proceso de inflamacion cronica y de cambios geneticos que puede progresar desde adenoma a adenocarcinoma. Se reporta un caso de una paciente de 88 anos que presento dolor abdominal epigastrico y de hipocondrio derecho. La colangiopancreatografia endoscopica retrograda demostro una lesion polipoidea originada en el conducto cistico con extension a coledoco. Se realizo reseccion parcial y biopsia. El estudio anatomopatologico diferido confirmo un adenoma papilar de la via biliar. Se presento una revision de la literatura.