Bony metaplasia in trachea and bronchi.
D000328:Adult; D000368:Aged; D001980:Bronchi / Q000473:pathology; D001982:Bronchial Diseases / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009999:Ossification, Heterotopic / Q000473:pathology*; D014132:Trachea / Q000473:pathology; D014133:Tracheal Diseases / Q000473:pathology*