 Patients are stratified according to prior bevacizumab treatment yes vs no. Patients receive VEGF Trap IV over 1 hour on day 1. Treatment repeats every 14 days in the absence of disease progression or unacceptable toxicity. Patients undergo blood collection at the beginning of each course and at 60 days after completion of study treatment. Samples are analyzed by immunoenzyme techniques to determine the pharmacokinetics of VEGF Trap. 