70 SCLC patients (pts): 25 women and 45 men aged 34 to 76 with limited disease were treated with chemotherapy in Institute of Tuberculosis in the period 1.01.1987-31.12.1992. After 3-5 courses of chemotherapy restaging was done using chest X-ray examination, bronchoscopy with cytological examination of bronchial material, abdomen ultrasound examination and other methods according to clinical indications. Complete regression (CR) of the tumor in chest X-ray examination was found in 17 cases, partial regression (PR) in 37 cases and no response (NR)-in 16 pts. The degree of tumor regression on chest X-ray had significant prognostic value. The median survival time in this group was 20 months while median was 13.5 months in PR patients group and 11.5 in NR patients. Bronchoscopy revealed macroscopic or microscopic signs of cancer in 5 of 17 pts with CR on chest X-ray examination, in 23 of 37 cases with PR on X-ray and in 12 of 16 with NR on X-ray. The persistence of tumor signs in bronchoscopic examination seemed to worsen the prognosis in pts with CR on chest X-ray. Complete regression of tumor revealed during bronchoscopy did not have any prognostic significance if CR on the chest X-ray was not obtained. It was concluded that bronchoscopic examinations in early phase of chemotherapy is useful to further treatment planning only in these pts in whom CR of tumor on chest X-ray examination was confirmed.