SACME读物马赛克征病因鉴别方



Self-assessmentCMERadioGraphic

自我评价式继续医学教育读物

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引言

马赛克征和空气潴留：有多少是正常的？

Etiology病因学

SmallAirwaysDisease

Smallairwaysaredefinedasnoncartilaginousairwayswithaninternaldiameteroflessthan2mmandarelocatedfromapproximatelytheeighthgenerationofairwaysdowntotheterminalbronchioles(smallestairwayswithoutalveoli)andrespiratorybronchioles(airwaysdistaltoterminalbronchiolesthatpartakeingasexchange)(12).Innormalpatients,thesesmallairwaysarenotvisibleonCTduetotheirsmallsize(13).However,incertaininstances,thesesmallairwaysmaybe


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