Patients enrolled in phase I (closed to accrual as of 3/14/2008) undergo blood sample collection periodically for pharmacokinetic studies and surrogate marker studies. These patients also undergo dynamic contrast-enhanced MRI, fludeoxyglucose F 18 positron emission tomography, and CT scan at baseline and on day 1 of courses 1 and 2 to evaluate blood flow parameters and metabolic activity of tumors. Patients enrolled in phase I (closed to accrual as of 3/14/2008) and phase II will also undergo blood collection for Anti-VEGF trap antibody.