Patients receive etoposide IV over 60-90 minutes, cisplatin IV over 30 minutes, and ifosfamide IV over 30 minutes on days 1-3. Mesna is administered IV over 15 minutes 30 minutes prior to and 4 hours after ifosfamide, then orally at 8 hours post infusion. Treatment continues every 28 days in the absence of unacceptable toxicity or disease progression.