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先天性浆果状动脉瘤为动脉瘤性蛛膜下出血最常见的原因。其形成前的病理生理机制系脑动脉分支角处平滑肌中层发育缺陷所致。此等动脉瘤常在年龄较大血管内弹力层
Congenital berry-like aneurysms are the most common causes of aneurysmal subarachnoid hemorrhage. The pathophysiology of its formation before the Department of cerebral arteries at the corner of smooth muscle due to defects in the middle layer. These aneurysms are often found in the older endovascular layers