The authors present a case of a 61-year-old female patient suffering from tracheobronchopathia osteochondroplastica (TBO). Etiology of this unit is uncertain. TBO is characterised by presence of multiple nodules of various size, situated in the submucosa of the trachea and major bronchi. The course is usually benign, until lesion obstructs the bronchial lumen. In the presented case, occluded middle lobe bronchi resulted in peripheral atelectasis of the lung.
Keywords: airway obstruction; atelectasis; bronchi diseases; middle lobe syndrome; tracheobronchopathia osteochondroplastica.