[Primary multiple cancer of both lungs]

The study summarizes the experience gained in the treatment of 46 cases of bilateral primary multiple cancer of the lung (synchronous cancer--17 and metachronous--29). Criteria for establishing primary multiple cancer and choice of treatment procedure are suggested. Surgery for bilateral cancer was carried out in 15 cases (metachronous tumor--11; synchronous--4). Radiation treatment was given to 8 patients (synchronous tumor--4, metachronous--4) and chemotherapy--to 7 patients (synchronous tumor--2, metachronous--5). The advantages offered by active surgical intervention in management of primary multiple bilateral cancer of the lung are discussed.