Stratum II: Patients undergo prophylactic radiotherapy and receive paclitaxel and carboplatin as in stratum I. Patients also receive bevacizumab IV over 30-90 minutes on day 15 (course 1). In both strata, treatment with paclitaxel, carboplatin, and bevacizumab repeats every 21 days for 5-6 courses in the absence of disease progression or unacceptable toxicity. Patients with complete or partial response or stable disease may continue to receive single-agent bevacizumab every 21 days in the absence of disease progression or unacceptable toxicity.