肝脏上皮样血管内皮瘤的影像特征分析

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ABSTRACTObjectiveTo summarize ultrasound，CT and MRI imaging characteristics hepatic epilioid hemangioendolioma（HEHE）.MethodsTotally7cases HEHEcomfirmed bypathology inour hospital were selected， ultrasound，CTandMRI imagingcharacteristics wereanalyzed.ResultsAmong 7HEHE patients，5cases had multiple lesions，while2caseshadsinglelesions，with49lesions totall.Two-dimensionalultrasound showed maximumdiameters lesionsrangedfrom 14 to91mm，with clear boundaryandregularshape.Six lesions wereadjacent to livercapsule，7 were adjacent toportal orhepaticveins，and3wereasociatedwithcoarsecalcification.There were6lesions hypoechoic findingsand1lesionhyperechoicfindings.Incontrastenhancedultrasound，3lesionsshowedring-likehyperenhancement during arterialphase，3lesionsshowedheterogeneous hypoenhancement，and1lesionshowedcentral hyperenhancement. Duringportalanddelayedphase，6lesionsshowed hypoechoic，and1lesionappearedmixedechogenicity.Among 6 HEHE patients whounderwentCT，allshowedlowdensityonplainscan，4patients（4lesions）underwent enhancedCT，esion showed heterogeneous hypoenhancementinarterialphase，and3lesionsshowedring-likehypoenhancement.Inportal phase anddelayed phase，allesions appearedaslowdensity.Among 6HEHEpatients（6lesions）whounderwent MR，all demonstratedlowsignalonT1-weighted imagesandhighsignal intensityonT2-weightedimagesonplainscan.Difusionweightedimagingrevealedrestricteddifusionin5lesionsandnosignificantrestrictionin1lesion.Duringarterialphase dynamicMRI，5lesions exhibitedring-likehypoenhancement，andshiftedtolowsignalduringportalanddelayedphase.

Anor1lesionshowedcentralhypoenancementinarterialphase，followedbyhighsignalinportalanddelayedphase. ConclusionHEHEhas certain characteristics onultrasound，CT，andMRI images.These features are typicall presentedas multiple lesions locatedadjacenttolivercapsuleor intrahepaticvesels，contrastenhancedcommonlyrevealsaslow enhancement patterns.

KEYWORDSUltrasonography;Contrast agent;CT;MRI;Liver;Epilioid hemangioendolioma

肝脏上皮样血管内皮瘤（hepaticepilioidhaemangioendolioma，HEHE）是一种罕见的间叶组织来源肿瘤，起源于肝脏血管内皮细胞，2020年版世界卫生组织软组织肿瘤分类将其归为低至中度恶性肿瘤。（剩余7912字）