PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 60-100% Life expectancy: Not specified Hematopoietic: Neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 1.5 mg/dL Renal: Creatinine no greater than 1.5 mg/dL Calcium less than 12.0 mg/dL Cardiovascular: No unstable angina No New York Heart Association grade III or IV cardiac disease Pulmonary: See Disease Characteristics Other: No active or uncontrolled infection No history of seizures No known Gilbert's Disease No medical or psychiatric conditions that makes patient a poor risk for participation in this study Not pregnant or lactating Negative pregnancy test