SolitarypulmonarySolitarypulmonarynodule:benignnodule:benignversusmalignantversusmalignant孤立性肺结节:良性孤立性肺结节:良性(liánɡxìnɡ)(liánɡxìnɡ)与恶性对比与恶性对比第一页,共三十一页。第一页,共三十一页。Thedifferentialdiagnosisofasolitarypulmonarynoduleisbroadandmanagementdependsonwhetherthelesionisbenignormalignant.孤立性肺结节的鉴别诊断是很多的,处理方法依赖于该病变是良性还是恶性InthisoverviewwewilldiscusssomeofthenewfeaturesthatcanhelptodifferentiatebetweenbenignandmalignantnodulesbaseduponCTandPET-CTfindings.在此篇文章,我们着重讨论(tǎolùn)下一些有助于鉴别良恶性结节的新特征,此特征是基于CT与PET-CT的检查结果第二页,共三十一页。第二页,共三十一页。CT:benignversusmalignantCalcificationSizeGrowthShapeMarginAirBronchogramsignSolidandGround-glasscomponentsContrastenhancement第三页,共三十一页。第三页,共三十一页。(liánɡxìnɡ)钙化大小生长速度形状(xíngzhuàn)边缘支气管含气征实性或磨玻璃样增强特征第四页,共三十一页。第四页,共三十一页。(gàihuà)Diffuse,central,laminatedorpopcorncalcificationsarebenignpatternsofcalcification.弥漫性,中心(zhōngxīn)性,分层,爆米花钙化是良性钙化,第五页,共三十一页。第五页,共三十一页。Thesetypesofcalcificationareseeningranulomatousdiseaseandhamartomas这些(zhèxiē)形式的钙化最常见于错构瘤、肉芽肿性病变第六页,共三十一页。第六页,共三十一页。Theexceptiontotheruleaboveiswhenpatientsareknowntohaveaprimarytumor.Forinstancethediffusecalcificationpatterncanbeseeninpatientswithosteosarcomaorchondrosarcoma.SimilarlythecentralandpopcornpatterncanbeseeninpatientswithGI-tumorsandpatientswhopreviouslyhadchemotherapy.一些病人(bìngrén)有原发肿瘤病史,可以表现为良性钙化例如骨肉瘤、软骨肉瘤可以表现弥漫性钙化。胃肠间质瘤的病人化疗后可以表现为中心性或苞米花钙化。第七页,共三十一页。第七页,共三十一页。(dàxiǎo)Asolitarypulmonarynodule(SPN)isdefinedasasingleintraparenchymallesionlessthan3cminsizeandnotassociatedwithatelectasisorlymphadenopathy.Alesiongreaterthan3cmindiameteri...