Head and Neck Infection and Inflammation

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1、HeadandNeckInfectionandInflammationRichS.Rana,MDa,GulMoonis,MDb,c,*KEYWORDSHeadandneckInflammationInfectionAbscessThisarticlediscussestheimagingmanifestationsexactincidenceisdifficulttoascertainandofinfectiousandinflammatoryconditionsoftheimagingisusuallynotperformed.Commonsite

2、sheadandneck.Specialattentionispaidtotheofcervicallymphadenitisarethesubmandibularsites,routesofspread,andcomplicationsofanddeepcervicalnodesbecausethesenodesneckinfections.Becausetheclinicalsignsandfiltermuchofthelymphaticfluidfromtheheadsymptomsandthecomplicationsofthesecondi-and

3、neck.Acutebilateralcervicallymphadenitistionsareoftendeterminedbythepreciseisthemostcommonformandisusuallycausedanatomicsiteinvolved,anatomicconsiderationsbyaviralupperrespiratorytractinfection.2Acutearestressed.Familiaritywiththefasciallayersunilateralcervicallymphadenitisisthenex

4、tmostandspacesoftheneckandthecontentsofeachcommonformandisusuallycausedbybacterialspaceishelpfulforthisdiscussion.1Thefascialinfection,withthemostcommoncausativelayersoftheneckareimportantbarrierstoinfec-organismsbeingStaphylococcusaureusandtion,andonceinfectionisestablished,thefas

5、cialStreptococcuspyogenes.3Theincidenceoflayersplayapartindirectingitsspread.methicillin-resistantSaureushasincreasedintherecentyears.4Acuteunilateralcervicallymphade-nitisinolderchildrenoradultswithahistoryofSUPERFICIALNECKINFECTIONSperiodontaldiseaseisusuallycausedbyaninfec-Thesu

6、perficialcervicalfasciaunderliestheskintionwithanaerobicbacteria.Superficialneckandiscomposedoftheadiposetissue,superficialabscessesusuallybeginaslymphadenitis,whichneurovascularstructures,lymphatics,andplatysmathenprogressesfromphlegmontoabscessmuscle(Fig.1).Infectioninthesuperfic

7、ialspace(Fig.2).usuallymanifestsascellulitis,lymphadenitis,orabscess.DEEPNECKINFECTIONSAsopposedtocervicallymphadenopathy,whichsimplyreferstotheenlargementoftheThedeepcervicalfasciaisdividedinto3layerslymphnodesintheneck,cervicallymphadenitis(superficial,middle,anddeep)thatencloset

8、heisdefinedastheenlarged,i