대한대장항문학회

Papillary serous peritoneal carcinoma(PSPC) is a rare malignancy that arises in the<br>peritoneum and histologically resembles papillary serous carcinoma of the ovary. If<br>peritoneal carcinomatosis occurs in the absence of an obvious primary tumor site and is<br>associated with a papillary serous pathology, we may be dealing with the distinct entity<br>of PSPC of extraovarian origin. Radiological findings suggesting the diagnosis are<br>diffuse microcalcifications in the peritoneum, which occur in relation to psammoma<br>bodies. The Ca-125 is most often abnormal and, not uncommonly, markedly elevated.<br>The diagnosis requires that the surgeon identify grossly normal ovaries or minimal<br>surface involvement. If PSPC is confirmed, a total abdominal hysterectomy, bilateral<br>salpingo-oophorectomy, and aggressive debulking surgery should be carried out, followed<br>by cisplatin-based chemotherapy. We report a case of PSPC arising from the rectum in<br>a 41 year-old woman.<br>