DISEASE CHARACTERISTICS: Histologically or cytologically confirmed stage IIIB, IV, or recurrent non-small cell lung cancer (NSCLC) including: Squamous cell carcinoma Adenocarcinoma (including bronchoalveolar cell) Large cell anaplastic carcinoma (including giant and clear cell carcinomas) Stage IIIB eligible for other CALGB protocols consisting of combined chemotherapy and chest radiotherapy not permitted Malignant pleural effusion allowed CNS metastases allowed following completion of cranial radiotherapy Unidimensionally or bidimensionally measurable disease Solid tumor mass or hilar lesion surrounded by aerated lung Pleural based mass Mediastinal or hilar adenopathy clearly measurable No bone only disease No pleural or pericardial effusions No irradiated lesions unless progression is documented following radiotherapy