Primary Prostatic Adenocarcinoma in a Domestic Short-Haired Cat

An 8-years-old, domestic short-haired cat was presented for constipation and symptoms referable to the lower urinary tract. A solid mass located in caudal area of abdomen palpated. Abdominal ultrasonography, positive-contrast retrograde urethrocystography total body computed tomography showed presence a prostatic neoformation occupying almost completely pelvic cavity. The displaced dorsolaterally descending colon englobed urethra, without apparent involvement urethral lumen. Histopathologic examination revealed carcinoma. Neoplastic cells moderate intense cytoplasmatic expression AE1/AE3, while no cytokeratin 7 Uroplakin III observed. Topographical, histological immunohistochemical findings were consistent with diagnosis primary adenocarcinoma prostate