树枝状大脑中动脉动脉瘤
Aneurysms in twig-like middle cerebral artery.
作者信息
Liu Hon-Man, Lai Dar-Ming, Tu Yong-Kwang, Wang Yao-Hung
机构信息
Department of Radiology, Division of Neurosurgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
出版信息
Cerebrovasc Dis. 2005;20(1):1-5. doi: 10.1159/000086119. Epub 2005 May 30.
BACKGROUND
We report a vascular abnormality of the middle cerebral artery (MCA) that has not been described in the literature before.
METHODS
Two patients (1 male and 1 female; age 44 and 67 years, respectively) were found to have a vascular abnormality in which the main trunk of the MCA had a twig-like form. Both patients presented with intracranial hemorrhage.
RESULTS
In these 2 patients, the abnormality was seen before the genu of the MCA. They had an intracranial hemorrhage due to an associated aneurysm inside the twigs. The twig appeared to be a network between the bifurcation of internal carotid artery and insular segment of MCA, and it was different from the collateral circulation due to acquired occlusion or moyamoya disease.
CONCLUSION
This new type of vascular lesion of the MCA is not benign. It appears to be associated with the occurrence of an aneurysm, an important clinical aspect.
背景
我们报告了一种以前文献中未描述过的大脑中动脉（MCA）血管异常情况。
方法
两名患者（1名男性和1名女性；年龄分别为44岁和67岁）被发现存在一种血管异常，其中大脑中动脉主干呈细枝状。两名患者均出现颅内出血。
结果
在这两名患者中，异常情况出现在大脑中动脉膝部之前。由于细枝内存在相关动脉瘤，他们发生了颅内出血。该细枝似乎是颈内动脉分叉与大脑中动脉岛叶段之间的一个网络，并且与因后天性闭塞或烟雾病导致的侧支循环不同。
结论
这种新型的大脑中动脉血管病变并非良性。它似乎与动脉瘤的发生有关，这是一个重要的临床方面。
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