Sunitinib for Metastatic Renal Cell Cancer With Imaging Biomarker Assessments for the Early Prediction of Tumor Response

"Imaging studies with complete analyses will be provided on all patients prior to institution of sunitinib therapy as well as after therapy at various early time points (1 week in 5 patients, 2 weeks in 5 patients, 3 weeks in 5 patients or 4 weeks in 5 patients) after institution of sunitinib therapy at 37.5 mg orally/day.~Imaging studies include:~FDG-PET scans FLT-PET scans H215O-PET scans DCE-MRI scans"