 Patients receive oral fenretinide Lym-X-SorbTM oral powder 4-HPRLXS oral powder mixed in food carriers three times daily on days 1-7. Treatment repeats every 21 days for 6 courses in the absence of disease progression or unacceptable toxicity. Patients achieving stable disease response or better may receive additional courses of treatment at the discretion of the treating physician and principal investigator. 