a not, no, without | tel complete | -ectasis dilation, widening, expansion
Atelectasis is a partial or complete collapse of the lung rendering the lung incapable of full expansion. It can be either obstructive (resulting from a blockage in the bronchial tubes) or can result from non-obstructive causes, such as tumors, injury, or pneumonia, among others.
References:
Mayo Clinic. (2010, March 19). Atelectasis. MayoClinic.com Health Information. Retrieved January 1, 2012, from http://www.mayoclinic.com/health/atelectasis/DS01170
Sharma, S. (2011, May 27). Lobar Atelectasis Imaging. Medscape Reference. WebMD. Retrieved January 1, 2012, from http://emedicine.medscape.com/article/353833-overview
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