Patients receive oxaliplatin IV over 2 hours and leucovorin calcium IV over 2 hours on day 1 and fluorouracil IV continuously over 46-48 hours beginning on day 1. Patients also receive bevacizumab IV over 30-90 minutes on day 1. Treatment repeats every 14 days for up to 26 courses in the absence of disease progression or unacceptable toxicity.