OBJECTIVE:We report acase of a primary urothelialcarcinoma of the bulbomembranous urethra, with special emphasison histopathological and immunohistochemical findings.METHODS/RESULTS: A 63-year-old man presented urethralobstruction symptoms. A radical phalectomy was performed and a4.5 x 4 cm bulbomembranous urethral tumor was observed.Histopathological analysis disclosed an urothelial carcinoma, thatshowed positive immunostaining for cytokeratin AE1/AE3,cytokeratin 7, carcinoembrionic antigen and epithelial membraneantigen. The patient recived radiotherapy and adjuvant chemotherapyand is currently free of disease.CONCLUSION: Posterior male urothelial carcinoma of theurethra is a rare neoplasm that usually is mistaken clinically for abenign lesion. The diagnostic is generally made in advanced stageswith a poor therapeutical response.