OUTLINE: This is an open label study. Patients receive intravenous amifostine over 15 minutes three times a week. Patients failing to respond by 8 weeks undergo dose escalation. Nonresponding patients are removed from the study by 12 weeks. Therapy is continued for up to six months in responding patients. Patients are observed for duration of response upon therapy discontinuation. Patients who relapse will have therapy resumed at the previous dose. Patients will be followed until death.