A Secondary Urothelial Carcinoma of the Penis Diagnosed

Abstract

Aim: Penile cancer is one of the rarest urogenital cancers. Penile metastases after cystectomy are possible and seem to be associated with the existence of an extensive tumor on the surgical specimen. Case Presentation: We report here the case of old man 78 years old, with a history of Radical Cysto-Prostatectomy with Bricker type urinary diversion, indicated for a pT3N0M0R0 infiltrating urothelial carcinoma of the bladder. He had consulted 7 years post surgery for an indurated lesion of the penis with urethrorrhagia. On examination, he presented an ulcerative-necrotic lesion under the left lateral coronal area of the penis, a diffuse induration of corporal bodies from the glans to the bulb, bilateral inguinal macro lymphadenopathies. Magnetic Resonance Imaging of the penis suggested a tumor extending over the entire penis, infiltrating the corpora cavernosa and spongiosa, with invasion of the albuginea, adjacent fat and skin. In view of this picture, a total penectomy with emasculation was performed. The histology of the surgical specimen showed a poorly differentiated urothelial carcinoma with an immunohistochemical study in favor of a primary urothelial origin (GATA3+). The tumor infiltrated both corpora cavernosa and the urethra with positive margins of resection. The right inguinal lymph node dissection showed one metastatic node out of two. The left inguinal lymph node dissection showed one metastatic lymph node out of six with capsular rupture. Thoracic-abdominopelvic CT Scan showed a right inguinal adenopathy with no other lesions suggestive of secondary localization. The diagnosis of secondary urothelial carcinoma of the penis classified as pT4N2M0R1 was made and the patient underwent chemotherapy on tumor board meeting. Conclusion: Secondary cancers of the penis, although rare, can occur years after radical treatment of the primary tumor. Immuno-histochemestry was esential to differentiate from primary squamous cell carcinoma in our case.