●临床表现◆一侧橫窦闭塞时可无症状。◆当对侧橫窦或窦汇先天异常，颅内静脉仅依赖一侧橫窦回流易导致颅内压增高。◆不同的症状取决于血栓的大小和累及的结构(jiégòu)■横窦血栓向下扩展至岩下窦向下扩展至岩下窦时，造成外展神经麻痹。■扩展至颈静脉扩展至颈静脉时，可影响到IX、X、XI颅神经。■血栓向前扩展至岩上窦向前扩展至岩上窦时，压迫三叉神经节或三叉神经第一支。■血栓经窦汇或下吻合静脉扩展到上矢状窦经窦汇或下吻合静脉扩展到上矢状窦时，会产生严重的颅内压增高、昏迷、癫痫、偏瘫或截瘫。■左侧横窦血栓累及到皮层左侧横窦血栓累及到皮层时，可出现失语。横窦和乙状窦血横窦和乙状窦血栓栓(xuèshuān)(xuèshuān)(transverseandsigmoidsinusthrombosis)(transverseandsigmoidsinusthrombosis)脑静脉脑静脉(jìngmài)(jìngmài)窦血栓窦血栓第一页，共三十四页。横窦和乙状窦血横窦和乙状窦血栓栓(xuèshuān)(xuèshuān)(transverseandsigmoidsinusthrombosis)(transverseandsigmoidsinusthrombosis)脑静脉脑静脉(jìngmài)(jìngmài)窦血栓窦血栓Caption:A23-year-oldfemalewithheadache.CTscandemonstratesasubtlerighttransversesinusthrombosiswithhighattenuation(arrows).MRvenographydemonstratesabsentflowintherighttransversesinus,sigmoidsinus,andinternaljugularvein.第二页，共三十四页。横窦和乙状窦血横窦和乙状窦血栓栓(xuèshuān)(xuèshuān)(transverseandsigmoidsinusthrombosis)(transverseandsigmoidsinusthrombosis)脑静脉脑静脉(jìngmài)(jìngmài)窦血栓窦血栓A32-year-oldpostpartumpatientwithheadaches.AxialCTimageshowsahypodenselefttemporallobevenousinfarct.Atriangularhigh-attenuationfocus(arrows)posterolateraltotheareaofinfarctionrepresentsthrombuswithinthelefttransversesinus.AxialMRvenogramdemonstratesocclusionofthelefttransversesinus,sigmoidsinus,andinternaljugularvein.第三页，共三十四页。横窦和乙状窦血栓横窦和乙状窦血栓(xuèshuān)(xuèshuān)(transverseandsigmoidsinusthrombosis)(transverseandsigmoidsinusthrombosis)脑静脉脑静脉(jìngmài)(jìngmài)窦血栓窦血栓CTscandemonstrates:aleftposteriortemporalhematomaina38-year-oldwomanonoralcontraceptives.Contrast-enhancedMRIshowinglackoffillingoflefttransversesinus.Axialviewo...
