OUTLINE: Patients receive 6-hydroxymethylacylfulvene (MGI-114) IV over 5 minutes daily for 5 consecutive days. Courses are repeated every 28 days. The minimum treatment period is 2 courses. Treatment continues indefinitely in the absence of unacceptable toxic effects or disease progression. Patients are followed at the end of every other course while on the study, and then every 3 months thereafter until death.