PATIENT CHARACTERISTICS: Age: 40 to 70 Performance status: Not specified Life expectancy: At least 5 years Hematopoietic: Not specified Hepatic: Not specified Renal: Not specified Pulmonary: See Disease Characteristics Other: No other comorbidity that limits life span to less than 5 years No prior cancer except nonmelanomatous skin cancer or carcinoma in situ of the cervix Not pregnant Negative pregnancy test Fertile patients must use effective contraception