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Pulmonary Fibrosis

Small bibasilar



what is a small bibasilar gravity-dependent atelectatic change mean?


Atelectasis refers to an area of the lung that is squeezed into a smaller than normal size. Bibasilar means this happens in the left and right bottom parts of the lung. It can be due to many things - most commonly obesity, taking small breaths, plugs of mucus, or medications that suppress the cough. Rarely, more serious conditions such as blood clots can present with bibasilar atelectasis.

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Response by:

James N Allen, Jr, MD James N Allen, Jr, MD
Clinical Professor of Pulmonary, Allergy, Critical Care & Sleep Medicine
College of Medicine
The Ohio State University