Fig1A50yearoldwomanwithacraniopharyngiomaintheprepontinecisternSagittalT1weightedimageshowsacysticmassintheprepontinecisternContrastenhancedT1weightedsagittalimageshowsaperipheralenhancingcy ID: 941673
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CraniopharyngiomainthePrepontineCisternWereportapathologicallyprovedcraniopharyngiomaintheprepon-tinecistern.A50-year-oldwomanpresentedwithswallowingdiffi-cultyfor1month.SheunderwentbrainMRandCTimaging.T1-weighted,T2-weighted,andcontrast-enhancedT1-weightedimagesshowedalargeperipheralenhancingcysticmassinthepre-pontinecistern.Insidethelesion,highsignalintensity(SI)onT1andlowSIonT2-weightedimagingwerenoted(Fig1).TheCTscanshowedfeaturessimilartothoseontheMRimages,exceptfortheadditionofaperipheralsmallcalcificationinthecysticlesion.Wecouldnotfindanyconnectionbetweenthemassintheprepontinecisternandthesellarorparasellararea.Themasswaspartiallysurgi-callyremoved,andhistopathologicexaminationrevealedcranio-pharyngiomaintheprepontinecistern.Craniopharyngiomascanariseanywherealongthecraniopharyn-gealcanal.However,thereareseveralreportsofcraniopharyngiomaswithunusuallocationsthatis,intheposteriorcranialfossa,withoutaconnectiontothesellarorparasellararea.Thelocationswerethetemporallobe,ponsandfourthventricle,andcerebellopontineangleandfourthventricle.Inourcase,thelocationwastheprepontinecistern,whichwasnotpreviouslydescribed,toourknowledge.Consideringthelocationofthecraniopharyngiomainourpatientincontrasttotheusualloca-tion,thehypothesisthatmostcraniopharyngiomasoccuralongthecraniopharyngealcanalcouldnotbeapplied.Instead,thesuggestionofSolarskietal,thatis,ectopiccraniopharyngiomasmightorigi-natefromtotipotentialormultipotentialcellsmightbeappliedtoourcase.Inconclusion,althoughthelocationinourpatientwasveryun-usual,craniopharyngiomascanoccuranywhere.1.SohnCH,BaikSK,KimSP,etal.Craniopharyngiomainthetemporallobe:acasereport.KoreanJRadiol2.ShahGB,BhaduriAS,MisraBK.Ectopiccraniopharyngiomaofthefourthventricle:casereport.SurgNeurol2007;68:96983.BashirEM,LewisPD,EdwardsMR.Posteriorfastcraniopharyngioma.BrJ4.SolarskiA,PankeES,PankeTW.Craniopharyngiomainthepinealgland.PatholLabMed1978;102:49091I.H.LeeC.J.SongJ.S.YeonDepartmentofRadiologyS.-H.KimDepartmentofNeurosurgeryK.-S.SongM.-K.YeoDepartmentofPathologyChungnamNationalUniversityHospitalChungnamNationalUniversitySchoolofMedicineSouthKoreaDOI10.3174/ajnr.A2467 Fig1.A50-year-oldwomanwithacraniopharyngiomaintheprepontinecistern.,SagittalT1-weightedimageshowsacysticmassintheprepontinecistern.,Contrast-enhancedT1-weightedsagittalimageshowsaperipheralenhancingcysticmassintheprepontinecistern.AJNRAmJNeuroradiol32:E57Mar2011