Small Round Blue Cell Tumor of Seminal Vesicle in a Young Patient

Seminal vesicle tumor is a rare disease with unclear origin. Generally, it is presented as a pelvic mass that can be detected by sonography and digital rectal exam. The authors report a 25-year-old patient with a pelvic mass which the magnetic resonance and surgical specimen reveal a seminal vesicle tumor. Immunohistochemical findings favored a primitive neuro-ectodermal tumor of the seminal vesicle. Herein, the treatment, histological and histochemical findings of this entity are discussed. Key words: seminal vesicles; neuroectodermal tumors; urogenital neoplasms Int Braz J Urol. 2006; 32: 566-