[CT findings of the benign tracheobronchial lesions with calcification].

In the benign tracheobronchial lesions with calcification, tracheobronchopathia osteochondroplastica, relapsing polychondritis and tracheobronchial amyloidosis were considered. CT demonstrated small nodules with calcifications at the trachea with or without deformity of tracheal wall in the case of tracheobronchopathia osteochondroplastica, swelling of tracheal cartilage with diffuse and multiple calcifications in the case of relapsing polychondritis and calcifications in the deep parts of tracheobronchial amyloid nodules. CT findings were able to differentiate those benign lesions. High-resolution CT is more useful in the distribution of abnormal calcification of these diseases.