ARM II: Patients receive gemcitabine hydrochloride and cisplatin as in arm I. Patients also receive bevacizumab IV over 30-90 minutes on day 1. Treatment repeats every 21 days for 6 courses in the absence of disease progression or unacceptable toxicity. Patients then receive bevacizumab IV over 30-90 minutes every 21 days in the absence of disease progression or unacceptable toxicity.