Obstructive complications in bronchial carcinomas that proliferate endobronchially constitute important problems. Laser photoresection has been recently used as a palliative means of treatment in these cases. In this study, we examined the efficacy of laser photocoagulation in cases with a central or proximal obstructive bronchial carcinomas and in patients with benign tumours. Forty-five patients (42 women, 3 men) were recruited in the study. Laser photoresection was performed to 24 patients and photocoagulation was performed to 21 patients because of intrabronchial hemorrhage. Nd-YAG laser was used as a laser source and it was utilized with the aid of a fiberoptic bronchoscope. The power of the laser beam was 15-40 watts and it was utilized in periods of 1-2 to seconds. The total dose administered in one sequence was 5000 J. The tumour mass was lysed in 90% of the 24 patients and a sufficiently patent bronchial lumen was obtained. The general status and obstructive signs and symptoms of these patients were improved. Three cases of bronchial adenoma were treated with photoresection without the aid of surgery. Bronchial hemorrhage was controlled in 21 patients with photocoagulation. An important complication was not Observed in any case. Laser photoresection and photocoagulation is an effective mean of treatment in centrally obstructing bronchial carcinomas and benign bronchial tumours.