This is a retrospective study of fifteen cases of primary peritoneal carcinoma who were treated between 2001 and 2010 in our hospital. The median age at the time of diagnosis was 63 years(range, 40 to 79 years). Three patients had clinical stage II disease, eleven patients had stage III disease, and one patient was unstaged. The serum CA125 values at pretreatment were elevated in all patients, with a median value of 4,144. 8 U/mL(range, 102. 8 to 23, 611. 0 U/mL). Optimal debulking was possible in 9 of the 15 patients. All patients were treated with paclitaxel and carboplatin chemotherapy during the preoperative and/or postoperative period. All patients at stage II disease were alive without evidence of disease at the time of evaluation(2 patients>5 years, 1 patient>3 years). Four patients with stage III disease had died from the disease less than 3 years after the first treatment. The results of our study showed poor survival for the group with stage III disease, but good survival for the group with stage II disease.