OUTLINE: The combination of whole body hyperthermia (WBH) and melphalan (L-PAM) is administered on week 1. The infusion of L-PAM is administered at a constant rate over approximately 10 minutes, beginning 20 minutes after achieving target temperature of 41.8 degrees Celsius by esophageal or axillary temperature probe. WBH is continued for an additional 40 minutes for a total of 60 minutes. On week 5 or 6, patients receive another combination of WBH and L-PAM. Disease status is reevaluated at least every 2 courses. Patients without progressive disease continue therapy of WBH and L-PAM every 4 weeks for a maximum of 6 courses.