OUTLINE: This is a multicenter study. Patients receive ecteinascidin 743 IV over 24 hours. Treatment continues every 6 weeks in the absence of unacceptable toxicity or disease progression for at least 2-6 courses. Patients with a complete response (CR) receive at least 2 additional courses after documented CR. Patients are followed every 3 months until disease progression. All patients are followed until death after disease progression.