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Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Bronchial obstruction leading to peripheral airway collapse can be caused by mucous obstructing the airway in asthma or post-operatively, or following aspiration of a foreign body.
Atelectasis is associated with a shift of the adjacent structures, such as the mediastinum, into the involved hemithorax. A "silhouette sign" occurs when the collapsed lung abuts against the heart and obliterates the margin between the lung and the heart.
Haller JO, Slovis TL: Introduction to radiology in clinical pediatrics. Yearbook Medical Publishers (Chicago) 1984.
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