PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 60%-100% Life expectancy: At least 6 months Hematopoietic: Absolute granulocyte count greater than 1,000/mm3 Platelet count greater than 75,000/mm3 Hepatic: Not specified Renal: Creatinine no greater than 1.5 times normal Cardiovascular: No NYHA class III/IV status No history of arrhythmia that would increase risk of treatment Other: No hypersensitivity to cisplatin, bovine collagen, epinephrine, or sulfites No significant history of extracranial carotid vascular disease from atherosclerosis, radiation therapy or previous carotid artery surgery No uncontrolled local infection at treatment sites No medical or psychiatric condition that would preclude informed consent No pregnant or nursing women Adequate contraception required of fertile patients