Ovarian remnant syndrome is defined as residual ovarian tissue non intentionally left in place by the surgeon during a bilateral salpingo-oophorectomy. Patients present various symptoms usually including chronic pelvic pain, pelvic mass, bowel obstruction, hydronephrosis due to ureteral compression. We report a case of adenocarcinoma arising in such an ovarian remnant revealed by vaginal bleeding 5 years after total abdominal hysterectomy and bilateral oophorectomy for uterine fibroids. It was regarded as stage IIIc according to the FIGO classification because of common iliac lymph node involvement while there was no ascitis, no peritoneal nor omental implant but a unilateral hydronephrosis induced by extrinsec ureteral obstruction. Complete cytoreductive surgery was achieved including partial bladder and lower ureteral resection with colpectomy, omentectomy, pelvic and para-aortic lymphadenectomy. Paclitaxel-Platinum combination chemotherapy was given for nine cycles.