Abstract
Formerly, the research works on the anomalies of the trachea and the bronchi were done mainly by anatomical observation on cadavers. However, reports on clinical cases are increasing because of the developement of the clinical techniques, such as the chest surgery, bronchography or endoscopy. The authors reported a case of forty-four year old male whose chief complaints were hemoptysis and hoarseness. Though the authors couldn't find any abnormality in the simple X-ray photography of the chest, at last a diverticulum of the right main bronchus was found by the bronchography and the bronchoscopy. Further, the authors confirmed the bleeding from the diverticulum accrding to the observation through the fiber-bronchoscopy. Some problems concerning this case were discussed with the review of the literatures.
