在解剖中发现一例左侧乙状窦缺如,就目前能查阅到的文献没见报道过,现报道如下供临床工作者参考。男尸,年约40岁,死因不明。其颅内静脉窦如图1所示,双侧岩上窦沿岩上沟向后外行,左侧延续为左横窦注入窦汇,右倾岩上窦及岩下窦均注入右乙状窦,左侧岩下窦在左颈静脉孔处移行为左颈内静脉,左侧乙状窦缺如,左颈内静脉仅收集一条岩下窦静脉血。这样该例的窦汇收集 Found in the anatomy of a left absence of sigmoid sinus, the current can see the literature has not been reported, are reported below for clinical reference. Male body, about 40 years old, the cause of death is unknown. The intracranial sinus as shown in Figure 1, the bilateral rock along the rock on the back of the groove ditch on the left continuation of the left transverse sinus injection of sinus, the right incline rock and sinus infuse into the sigmoid sinus are sinus, left inferior petrosal sinus Left in the left jugular vein at the migration of the left internal jugular vein, left sigmoid sinus absence of the left internal jugular vein only collect a petrosal sinus venous blood. This example of sinus collection