Woodring et al. (1991) suggested the following diagnostic criteria for tracheomegaly in adults based on chest radiography: * Adult Males: Tracheal transverse diameter > 25 mm and sagittal diameter > 27 mm. * Adult Females: Tracheal transverse diameter > 21 mm and sagittal diameter > 23 mm.
Tracheobronchomegaly
Subcutaneous emphysema
Tracheal deviation
Bronchophony
Tracheomalacia
Laryngotracheal stenosis
Tracheal agenesis
Pachygyria