A CASE REPORT OF PRIMARY CLEAR CELL ADENOCARCINOMA OF THE RETROPERITONEUM

A rare case of primary clear cell adenocarcinoma of the retroperitoneum is reported. A 58-year-old woman, who underwent total hysterectomy and bilateral salpingo-oophorectomy for cervical carcinoma at the age of 44 years old, was pointed out having a tumor of the ascending colon. On close examination, an 8×6cm huge pelvic tumor was found out by computed tomography. Transrectal needle biopsy of the tumor showed adenocarcinoma of unknown origin. She underwent an ileocecal resection and a resection of the retroperitoneal tumor. The tumor was located in the retroperitoneal cavity at the left side of the rectosigmoid. It was adherent to the rectal mesocolon, stump of the vagina and bladder. Histological examination showed clear cell adenocarcinoma of the retroperitoneum, and the colon tumor was revealed to be well differenciated adenocarcinoma, m, n0. The patient received chemotherapy for ovarian carcinoma because both this tumor and ovarian clear cell adenocarcinoma seemed to be of miillerian origin. There have been no signs of recurrence as of 14 months after the surgery. As far as we could review, no such case as clear cell adenocarcinoma arising from the retroper-itoneum like our case has been reported in Japan.