2006 Volume 39 Issue 6 Pages 696-701
Peritoneal adenocarcinoma in peritoneum is rare, originating in the paramesonephric duct. An 80-year-old woman seen for diarrhea and abdominal pain was found in computed tomography (CT) to have a large intraabdominal mass. Preoperative diagnosis by CT, magnetic resonance imaging (MRI), and fluorodeoxyglucose-positron emission tomography (FDG-PET) indicated appendiceal cancer with peritoneal dissemination. The pathological diagnosis of the resected specimen was papillary adenocarcinoma of the ascending colon with mucinous cystadenocarcinoma and clear cell carcinoma. The woman underwent combined chemotherapy with CDDP/TS-1 for local recurrence. The prognosis of adenocarcinoma with clear cell carcinoma is generally dismal due to the poor response to chemotherapy. In this case, surgical resection and chemotherapy brought the recurrent tumor under control, thus indicating a new way of potentially managing such tumors.
