TABLE1.HeadandNeckLymphaticSystem(I)AnatomicSiteFirstEchelonNodalGroupSubgroupCategoryAbbreviationLacrimalglandPreauricularnodesMainPAuNParotidnodesMainPG&NSubmandibularnodesMainSMaNEyelids,conjunctivaPreauricularnodesMainPAuNParotidnodesMainPG&NSubmandibularnodesMainSMaNPinnaPreauricularnodesMainPAuNParotidnodesMainPG&NMastoidnodesMainMNInternaljugularnodesUpperMainIJNuExternalauditorycanalParotidnodesMainPG&NInternaljugularnodesUpperMainIJNuMiddleearPreauricularnodesMainPAuNRetropharyngealnodesMainPsRNInternaljugularnodesUpperMainIJNuExternalnoseSubmandibularnodesMainSMaNNasalcavityRetropharyngealnodesMainPsRNInternaljugularnodesUpperMainIJNuParanasalsinusesRetropharyngealnodesMainPsRNInternaljugularnodesUpperMainIJNuLip,upperSubmandibularnodesMainSMaNSubmentalnodesAccessorySMeNPreauricularnodesAccessoryPAuNLip,lowerSubmandibularnodesMainSMaNSubmentalnodesMainSMeNCheek,cutaneousSubmandibularnodesMainSMaNSubmentalnodesMainSMeNParotidnodesMainPG&NBuccalmucosaSubmandibularnodesMainSMaNTongue,apexSubmentalnodesMainSMeNInternaljugularnodesUpper,middleMainIJNu,mTongue,lateralandposteriorSubmandibularnodesMainSMaNInternaljugularnodesUpperMainIJNuTABLE2.HeadandNeckLymphaticSystem(II)AnatomicSiteFirstEchelonNodalSubgroupCategoryAbbreviationGroupFloorofmouthSubmentalnodesMainSMeNSubmandibularnodesMainSMaNInternaljugularnodesUpper,middleMainIJNu,mLowergumSubmandibularnodesMainSMaNSubmentalnodesMainSMeNInternaljugularnodesUpper,middleMainIJNu,mUppergumSubmandibularnodesMainSMaNRetropharyngealnodesMainPsRNHardpalate,softInternaljugularnodesUpperMainIJNupalateinferiorSubmandibularnodesAccessorySMaNRetropharyngealnodesAccessoryPsRNSoftpalate,superiorRetropharyngealnodesMainPsRNInternaljugularnodesUpperMainIJNuTonsilInternaljugularnodesUpperMainIJNuNasopharynxRetropharyngealnodesMainPsRNInternaljugularnodesUpperMainIJNuSpinalaccessorynodesMainSANPyriformfossaInternaljugularnodesUpper,middleMainIJNu,mPosteriorcricoidInternaljugularnodesUpper,middleMainIJNu,mPosteriorpharyngealRetropharyngealnodesMainPsRNwall,superiorInternaljugularnodesUpperMainIJNuPosteriorpharyngealwall,inferiorInternaljugularnodesMiddleMainIJNmSupraglotticlarynxInternaljugularnodesUpper,middleMainIJNu,mInfraglotticlarynxInternaljugularnodesMiddle,lowerMainIJNm,lCervicalpretrachealnodesCervicalMainCPNPrelaryngealnodesMainPLNTracheaCervicalpretrachealCervicalMainCPNnodesCervicalparatrachealnodesCervicalMainLCP,RCPPrelaryngealnodesAccessoryPLNThyroidCervicalpretrachealnodesCervicalMainCPNCervicalparatrachealnodesCervicalMainLCP,RCPInternaljugularnodesUpper,middle,lowerMainIJNu,m,lRetropharyngealnodesAccessoryPsRNParotidglandParotidnodesMainPG&NSubmandibularnodesMainSMaNSubmandibularglandSubmandibularnodesMainSMaNInternaljugularnodesUpperMainIJNuSublingualglandSubmandibularnodesMainSMaNInternaljugularnodesUpperMainIJNuTABLE3.ThoracicLymphaticSystemAnatomicSiteFirstEchelonNodalGroupSubgroupCategoryAbbreviationLung;RULanteromedialRightparatrachealnodesUpper,lowerMainRUP,RLPLung;RULposterolateral,RML,RLLsuperiorRightparatrachealnodesRighthilarnodesSubcarinalnodesUpper,lowerMainMainMainRUP,RLPPHNrSCNLung;RLLinferiorRighthilarnodesMainPHNrSubcarinalnodesMainSCNLung;LULsuperiorLeftupperparatrachealnodesMainLUPPrevascularnodesMainPVsNAortopulmonarywindownodesMainAPWNLung;LULinferior,LLLsuperior,LLLmiddleLeftupperparatrachealn...
