DISEASE CHARACTERISTICS: Histologically documented epithelial ovarian carcinoma or fallopian tube cancer or primary peritoneal cancer following initial cytoreductive surgery and chemotherapy with at least one cisplatin based chemotherapy regimen Must have undergone a second assessment procedure (laparoscopy or laparotomy) within 8 weeks of protocol entry, and have confirmation of residual disease no greater than 1.0 cm at the end of the procedure