大脑中动脉粥样硬化栓塞

文摘

我们解剖报告15例脑动脉粥样硬化栓塞(14个男人和一个女人,57到76岁)并分析其病理特点。心血管外科或导管插入术触发大脑中动脉粥样硬化栓塞6例(aortocoronary绕过两个;紧急aortocoronary绕过经皮穿冠状血管成形术后,;移植物植入胸主动脉瘤,2;冠状动脉造影,其中一个)。的事件引发了栓塞在剩下的9例不清楚。大脑病理检查显示,9例单个或多个皮质出血性梗死对应于两个主要的脑动脉领土之间的边境地区。许多leptomeningeal动脉位于皮层沟和表面的蛛网膜下腔空间相邻的图像是由动脉粥样硬化闭塞的栓子,主要由胆固醇晶体组成。的内部直径闭塞动脉从50到300μm不等。领土梗塞动脉中6例,其中三个thromboemboli包含各种大量的胆固醇晶体阻塞的主要动脉或其分支机构提供大梗塞的地区,苍白的两例,出血性。 The other three cases had hemorrhagic infarcts in which atheromatous emboli were present only in the small leptomeningeal arteries and were composed mostly of cholesterol crystals. Atheromatous embolism in the brain frequently causes border-zone infarcts by occlusion of the terminal cortical branches, and sometimes causes arterial territorial infarcts if the emboli are associated with fibrin and sufficiently large to occlude the larger arteries.