OUTLINE: All patients receive cisplatin followed by etoposide on days 1-3. Treatment repeats every 4 weeks for a total of 6 courses unless disease progression or unacceptable toxicity intervenes. The etoposide dose may be increased by 10% on subsequent courses if the white blood cell and platelet nadirs on the previous course are at least 3,000 and 100,000, respectively. Patients are followed every 2 months for 6 months, then every 3 months for 4.5 years.