a fragment of thick, tenacious mucus in the shape of a small bronchus. It is often coughed up as an acute asthma attack resolves. See also: mucous plug.
bron·chi·al cast
(brongkē-ăl kast) A fragment of thick, tenacious mucus in the shape of a small bronchus; often coughed up as an acute asthma attack resolves.
bronchial cast
Mucus formed into the shape of the bronchi in which it was previously lodged.See also: cast