 Patients receive pixantrone IV over 1 hour on day 1, methylprednisolone IV over 15 minutes on days 1-5, cisplatin IV over 30 minutes on days 1-4, and cytarabine IV over 2 hours on day 5. Treatment repeats every 21 days for at least 8 courses in the absence of disease progression or unacceptable toxicity. 