Safety Study of Preoperative Sunitinib and Radiation in Soft Tissue Sarcoma

"Patients will receive Sunitinib daily for 2 weeks prior to and then concurrently with irradiation as neoadjuvant treatment. Radiotherapy will be given as intensity modulated radiation therapy with a total dose of 50.4Gy in 28 fractions to each patient (5 1/2 weeks).~Sunitinib will be given in two dose levels. The first dose level will be 25mg Sunitinib per os daily. The second dose level will be 37.5mg sunitinib per os daily. A dose modification schedule according to a 3+3 design will be applied for patient accrual."