简介：

简介：

简介：

简介：

简介：Objective:Survivalbenefitofadjuvantchemotherapy(AC)ofpatientswithintrapulmonarylymphnode(IPLN)metastasis(level12-14)needsinvestigation.WeevaluatedtheimpactofAConpatientswhosemetastaticnodeswerelimitedtointrapulmonarylevelsaftersystematicdissectionofN1nodes.Methods:First,155consectivecasesoflungcancerconfirmedaspathologicN1werecollectedandevaluated.PatientsreceivedsystematicdissectionofN2andN1nodes.ForpatientswithIPLNmetastasis,survivaloutcomeswerecomparedbetweenthosereceivingACandthosenotreceivingAC.Results:Inthisgroup,112cases(72.3%)hadIPLNmetastasisand55cases(35.5%)hadN1involvementlimitedtolevel13-14withoutfurtherdiseasespreadtohigherlevels.PatientswithIPLNinvolvementhadabetterprognosisthanthatofpatientswithhilar-interlobarinvolvement.FortheintrapulmonaryN1group(level12-14-positive,level10-11-negativeorunknown,n=112),nosurvivalbenefitwasfoundbetweentheACgroupandnonACgroup[5-yearoverallsurvival(OS):54.6±1.6vs.50.4±2.4months,P=0.177].However,76of112casesforwhomharvestingoflevel-10andlevel-11nodeswasdonedidnotshowcancerinvolvementinpathologyreports(level12-14-positive,level10-11bothnegative),oncologicoutcomewasbetterforpatientsreceivingACthanthosenotreceivingACinthissubgroup(5-yearOS:57.3±1.5vs.47.1±3.2months,P=0.002).Conclusions:OncologicoutcomemaybeimprovedbyACforpatientswithinvolvementofN1nodeslimitedtointrapulmonarylevelsaftercompleteexaminationofN1nodes.