OUTLINE: This is a nonrandomized study. Patients receive gemcitabine IV over 30 minutes and cisplatin IV over 1 hour on days 1, 8, and 15 every 28 days. Patients with complete response may receive an additional 2 courses after attainment of complete response status. Treatment continues in the absence of disease progression or unacceptable toxicities for a maximum of 8 courses. Patients are followed every 3 months for 2 years and then at 3 years after treatment.