[Granular cell bronchial tumors. General features, developmental and therapeutic aspects. Apropos of 4 new cases]

The authors report 4 new cases of bronchial granular cell tumours. The course of these rare tumours is usually slow and benign. They are usually discovered at endoscopy. Surgery is the most radical therapeutic solution and is that most often used. The possibilities of endoscopic resection, use of the laser or therapeutic abstention with endoscopic surveillance must be reserved for cases where surgical operation is contraindicated. In addition, the authors report one case in which multiple chemotherapy appeared to result in disappearance of a granular cell bronchial tumour.