A Case of Retroperitoneal Mucinous Cystadenocarcinoma

Yoshiro Saikawa, Hitoshi Katai, Hirotoshi Maruo, Masahisa Houjou, Akio Kosaka

Department of Surgery, Shimizu City Hospital

Primary retroperitoneal mucinous cystadenocarcinoma is very rare. Only 11 cases of retroperitoneal mucinous cystadenoma or cystadenocarcinoma have been reported in Japan. A case of retroperitoneal cystadenocarcinoma is reported. The patient was a 50-year-old woman with the chief complaint of distention of the right lower quadrant of the abdomen. A infant's head-sized painless tumor could be palpated in the right lower quadrant of the abdomen. Abdominal computed tomographs and ultrasonographs showed a cystic mass 16.5×10.0×15.0 cm size and an intracystic solid tumor 3 cm in diameter. At laparotomy a large cystic tumor was found in the right iliac fossa displacing the ascending colon and the cecum medially. And the cyst had no connection with any surrounding structures, and was easily removed intact. Other organs, for example the uterus, tubes and ovaries were normal. The cystic tumor measured 10.5×17.5×16.5 cm and the inner space was filled with mucinous fluid. A papillary tumor, 2.3×1.5×2.0 cm was protruded into the cyst. Histologically it was a mucinous cystadenocarcinoma. The patient has been followed for 4 months with no evidence of recurrence.

Key words
retroperitoneal tumor, cystadenocarcinoma, intracystic tumor

Reprint requests
Yoshiro Saikawa Department of Surgery, Shimizu City Hospital
1231 Miyakami, Shimizu-shi, 424 JAPAN

Accepted
November 20, 1991

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