颈内动脉岩段动脉瘤PetrousInternalCarotidArteryAneurysm

来源：双语学影像

病例选自AJNRCaseoftheWeek

G.Boulouis,L.Estrade,X.LeclercNeuroradiologyDepartmentLilleUniversityHospitalFranceDescription

A53-year-oldmanwithhistoryofrecurrentheadachesandrecentonsetofpulsatiletinnitus

53岁男性，既往有头痛病史。近期出现搏动性耳鸣。

Legends

CoronalT2WI(A)demonstratesawell-definedovoidhypointenselesionintherighttemporallobe.AxialT1WI(B)andcorrespondingfat-suppressedcontrast-enhancedaxialT1WI(C)demonstratethelesiontobeintrinsicallyhyperintenseandshowingnear-homogenousenhancement.SagittalT1WI(D)demonstratesthelesiontobeclearlyextra-axial.NoncontrastCTscan(E)demonstratesanexpansilelesionintheregionoftherightpetrouspyramid,whichcannotbedistinguishedseparatelyfromthehorizontalcarotidcanal.DSA(F)confirmsasaccularaneurysmarisingfromthehorizontalpetroussegmentoftherightinternalcarotidartery.

冠状位T2WI示右侧颞部边界清楚的类圆形低信号。

横断位T1WI及对应的脂肪抑制T1WI增强扫描示病灶呈稍高信号，增强扫描均匀强化。

冠状位T1WI示示病灶位于脑外。

CT平扫示右侧颞骨岩部膨胀性病变，与颈动脉孔分界不清。

DSA证实为右侧颈内动脉岩段囊状动脉瘤。

PetrousInternalCarotidArteryAneurysm

颈内动脉岩段动脉瘤

Petrousinternalcarotidartery(ICA)aneurysmsareun

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