Sutent Adjunctive Treatment of Differentiated Thyroid Cancer

Sutent 37.5 mg/day will be given orally after radioactive iodine therapy. Total time of Sutent drug administration will be 52 weeks, absent unacceptable toxicity or disease progression. Sutent is supplied as 12.5mg and 25 mg tablets. Patients are to swallow the tablets whole with approximately 250 ml (8 oz.) of water, fasting each morning. Patients will be given monthly calendars (patient diaries) to document the time when the Sutent pills are taken. At monthly visits, patients will bring back this record and the drug bottles.