기관기관지이소성 골연골형성증 2례

Tracheobronchopathia osteochondroplastica (TO) is a rare idiopathic tracheobronchial abnormality characterized by diffuse cartilaginous and osseous nodules protruding into the airway lumen of the trachea and bronchus. TO is easy to misdiagnose because of nonspecific symptoms and chest CT scan with pathologic biopsy is necessary for definitive diagnosis. We report two cases of patient with TO who underwent laryngomicroscopic biopsy and tracheostomy with literature review.