Cystic prostatic ductal adenocarcinoma – report of a rare case

Abstract

Cystic prostate cancer is a rare entity with very few cases reported in the literature. Ductal adenocarcinoma, formerly known as ―endometrioid adenocarcinoma‖, is a clinical and histological variant of prostatic carcinoma, accounting for 0.2-1.3 % of all prostatic carcinomas. We report a case of purely cystic prostatic ductal adenocarcinoma (PDA) in an elderly male who presented with obstructive gastro- intestinal and urinary symptoms. Clinically it was mistaken for a benign prostatic cyst as serum Prostatic specific antigen (PSA) was only mildly elevated. Histopathological examination of the de-roofed cyst wall revealed a tumor with a papillary configuration. In this case report we discuss a rare tumor, the reasons for clinical misdiagnosis and the histopathological differential diagnoses