We report the case of a 37-year-old man suffering from dysuria, frequency, acute renal failure followed by bowel distress with rectal tenesmus. PSA was 6.19 ng/ml. CT of abdomen and pelvis revealed a probable prostatic-related pelvis mass. TRUS was not carried out due to intolerance. The patient underwent laparotomy through a lower midline incision that confirmed a firm, even if not involving the adjacent organs, considerable pelvic mass adhering to the left seminal vesicle and involving the right one. Therefore the right seminal vesicle and the mass originating from it were removed. Three months follow-up showed a clinically recovered patient, free of voiding and intestinal symptoms, back to normal working activity.