晕征和反晕征课件.ppt

是指肺部CT或薄层CT上，肺密度轻度增加，支气管和血管轮廓可见，形似磨玻璃，称磨玻璃密度影。晕征分类晕征病因免疫功能不全
侵袭性曲霉菌、毛霉菌、念珠菌及隐球菌一晕征-感染性疾病-真菌中国CT和磁共振杂志2014年6月12卷3期免疫功能不全
常见单纯疱疹病毒、巨细胞病毒、
水痘带状疱疹病毒及粘病毒slow-resolvingbacterialpneumonia(吸收延迟性肺炎)

放线菌

结核分枝杆菌1.64岁男，退休，咳嗽、间断咯血2月来诊。吸烟，既往健康，痰涂片革兰阴性菌，培养：卡他布兰汉菌；2.45岁，既往心梗，吸烟，咳嗽1月间断咯血10天，痰培养：流感嗜血杆菌立克次体

寄生虫肾上腺嗜铬细胞瘤
血管肉瘤转移瘤
肾细胞癌
绒毛膜癌
肺血管肉瘤
Kaposi肉瘤Hemorrhagicmetastasisinapatientwithchoriocarcinoma（绒毛膜癌）whopresentedwithmassivehemoptysis.A:Computedtomographyscanofthechestshowsmultiplehemorrhagicpulmonarynoduleswithahalosignthathavecoalescedintheposteriorsegmentsoftherightlung.B:Macroscopiclungsliceshowingseveralroundhemorrhagiclesions.C:Macroscopicimageofnodulescontaininghemorrhagicareas,fibrin,andtumorcells(hematoxylin-eosin,magnification×10).细支气管肺泡癌

消化系、胰腺、肺腺癌

淋巴瘤Bronchioloalveolarcarcinomainapatientwithchroniccough.A:
Computedtomographyscanofthechestshowsnoduleswithahalosignintherightlung,withsomepseudocavitation(arrow).Alsovisibleisaconsiderableareaofconsolidationintheleftlung.B:Microscopicimageshowingthickenedalveolarwalls(asterisks)duetoinfiltrationbytumorcells(arrows)ematoxylin-eosin,magnification×10).出血性结节

非出血性结节三晕征-非感染性疾病-出血性结节Wegenergranulomatosis.A:Computedtomographyscanshowing2pulmonarynodulessurroundedbyahalo(arrows)andanareaofconsolidation
intheleftlowerlobe(asterisk),alsowithahalosign.Thepatient,whosefirstsymptomwashemoptysis,alsohadrapidlyprogressingglomerulonephritis肾小球肾炎B:Microscopicimageshowinginflammatoryinfiltrationofthearterialwallwithamultinucleatedgiantcell(arrow)andendothelialdestruction(arrowheads)(hematoxylin-eosin,magnification×20).结节病
机化性肺炎
闭塞性细支气管炎
嗜酸细胞肺炎
肺淀粉样变反晕征反晕征病因一反晕征-感染性疾病-真菌一反晕征-感染性疾病-结核二反晕征-机化性肺炎（19%）二反晕征-机化性肺炎三反晕征-非特异性间质性肺炎四反晕征-结节病五反晕征-肺栓塞Multifocalpulmonaryadenocarcinomaina70-
year-oldfemale.CTimageshowsbilateralulmonary
noduleswiththereversedhalosign(blackarrows)andground-glasspulmonarynodules(whitearrows).Metastaticrenalcellcarcinomaina73-year-oldmale.TheCTscanshowsmultiplebilaterallesionswithreversedhalosign(RHS),biopsyproventorepresen