<unk>  may be caused by a solidification of lung tissue around the bronchi – which may indicate lung cancer – or by fluid in the alveoli, which may indicate pneumonia. However, it may also have benign causes, such as wide bronchi. As such, it is usually an indication for further investigation rather than the main basis of a diagnosis.
Bronchophony
Subcutaneous emphysema
Tracheobronchomegaly
Tracheal deviation
Pachygyria
Diaphragmatic spasm
Autoinflation
Visakhapatnam gas leak