PRIOR CONCURRENT THERAPY: Biologic therapy: No concurrent antitumor treatment No concurrent immunotherapy Chemotherapy: See Disease Characteristics Recovered from prior chemotherapy Prior cisplatin allowed if initial dose at least 50 mg/m2 Prior carboplatin allowed if initial dose at least 300 mg/m2 or AUC at least 4 No other concurrent chemotherapy Endocrine therapy: No concurrent hormonal therapy Radiotherapy: No concurrent radiotherapy No prior abdominal/pelvic irradiation Surgery: See Disease Characteristics No second look laparotomy or laparoscopy