DISEASE CHARACTERISTICS: Histologically proven non-small cell lung cancer Adenocarcinoma Squamous cell carcinoma Large cell carcinoma Undifferentiated carcinoma Stages II-IIIB Medically inoperable stage II and IIIA Unresectable stage IIIA and IIIB Partial resection of stage IIIA or IIIB disease with histologically proven mediastinal lymph node involvement with microscopic or measurable disease Ineligible for RTOG 9410 or RTOG 9304 Men with elevated PSA no greater than 10 and no clinical evidence of prostate carcinoma are eligible No pleural effusion large enough to be visible by plain chest radiograph, unless proven to be benign Limited metastatic disease (no liver metastases) defined as: No more than 3 lung nodules outside the primary tumor suspected to be metastatic OR No more than 3 sites of suspected metastatic disease seen on bone scan or skeletal films OR 1-3 brain metastases, with plans for whole brain irradiation, with or without surgery or radiosurgery OR Single adrenal metastases not exceeding 3 cm in size