病理学表现：组织学上，DIP的特征是远侧气腔内过量巨噬细胞的广泛积聚，巨噬细胞分布均匀，间质受累轻。这与呼吸细支气管炎－间质性肺病不同，后者的病变明显地以细支气管为中心。大多数DIP病例与吸烟有关，但少数为特发性或伴有先天性代谢缺陷。ZMq影像园－共享放射医学资源X线胸片和CT表现：磨玻璃影为其主要异常，倾向肺周围部和基底部分布，在有些病例的磨玻璃ZMq影像园－共享放射医学资源肺区中可见微囊肿或蜂窝。ZMq影像园－共享放射医学资源
Pathology.―Histologically,DIPischaracterizedbythewidespreadaccumulationofanexcessofmacrophagesinthedistalairspaces.Themacrophagesareuniformlydistributed,unlikeinrespiratorybronchiolitisCinterstitiallungdisease,inwhichthediseaseisconspicuouslybronchiolocentric.Interstitialinvolvementisminimal.MostcasesofDIParerelatedtocigarettesmoking,butafewareidiopathicorassociatedwithrareinbornerrorsofmetabolism.ZMq影像园－共享放射医学资源
RadiographsandCTscans.―Ground-glassopacityisthedominantabnormalityandtendstohaveabasalandperipheraldistribution（Fig1）.Microcysticorhoneycombchangesintheareaofground-glassopacityareseeninsomecases.ZMq影像园－共享放射医学资源
Figure1:TransverseCTscaninapatientwithdesquamativeinterstitialpneumonia.ZMq影像园－共享放射医学资源
