atelectasis

Definition / meaning of atelectasis

Failure of the lung to expand (inflate) completely. This may be caused by a blocked airway, a tumor, general anesthesia, pneumonia or other lung infections, lung disease, or long-term bedrest with shallow breathing. Sometimes called a collapsed lung.

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Find More About 'atelectasis'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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