- Arm I (primary surgery): Patients undergo radical surgery. Within 6 weeks after primary surgery, patients receive chemotherapy comprising carboplatin alone or in combination with paclitaxel or another chemotherapy agent on day 1. Chemotherapy repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity. Patients may undergo interval debulking surgery after the third course of chemotherapy.