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Lung-nontumor

Other non-neoplastic disease

Atelectasis

Reviewers: Dr. Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 9 November 2011, last major update October 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

General
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● Incomplete expansion of lung or collapse of previously inflated lung, due to obstruction/resorption, compression or contraction
● Obstruction: resorption of oxygen causes collapse and mediastinal shifts towards affected lung; due to mucus plugs, asthma, chronic bronchitis, bronchiectasis, postoperative changes, foreign bodies, but not usually due to tumors, which cause only subtotal obstruction
● Compression: due to fluid (congestive heart failure), air (pneumothorax), tumor and blood; causes mediastinal shifts away from affected lung
● Contraction: due to fibrosis (restrictive lung disease)
● Patchy: due to loss of surfactant in acute respiratory distress syndrome

End of Lung-nontumor > Other non-neoplastic disease > Atelectasis

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