Eleven cases with idiopathic benign bronchial ulcer or erosion studied by the fiberoptic bronchoscope were reported. The patients consisted of ten males and one female of ages ranging from 21 to 68 year old, the majority being men in their thirties. These lesions were located in the main bronchus and/or in the segmental bronchi and more commonly in the right bronchi. Over half the cases had several lesions and the rest had a solitary lesion. These lesions of unknown etiology are considered to be of benign nature, because all seven patients followed up have been doing well without recurrence or any severe complication.
