大脑中动脉重复畸形。
Duplicated middle cerebral artery.
作者信息
Perez Jesus, Machado Calixto, Scherle Claudio, Hierro Daniel
机构信息
Hermanos Ameijeiras Hospital, Neurology, San Lazaro 701, Havana, Havana, 10300, Cuba.
出版信息
BMJ Case Rep. 2009;2009. doi: 10.1136/bcr.06.2009.2035. Epub 2009 Dec 3.
Duplicated middle cerebral artery (DMCA) is an anomalous vessel arising from the internal carotid artery. The incidence DMCA is relatively law, and an association between this anomaly and cerebral aneurysms has been documented. There is a controversy whether DMCA may have perforating arteries. This is an important fact to consider in aneurysm surgery. We report the case of a 34-year-old black woman who suffered a subarachnoid hemorrhage and the angiography a left DMCA, and an aneurysm in an inferior branch of the main MCA. The DMCA and the MCA had perforating arteries. The aneurysm was clipped without complications. The observation of perforating arteries in our patient confirms that the DMCA may have perforating arteries. This is very important to be considered in cerebral aneurysms surgery. Moreover, the DMCA may potentially serve as a collateral blood supply to the MCA territory in cases of MCA occlusion.
重复大脑中动脉（DMCA）是一种起源于颈内动脉的异常血管。DMCA的发病率相对较低，且这种异常与脑动脉瘤之间的关联已有文献记载。关于DMCA是否可能有穿支动脉存在争议。这是动脉瘤手术中需要考虑的一个重要因素。我们报告一例34岁黑人女性，她发生了蛛网膜下腔出血，血管造影显示有左侧DMCA以及大脑中动脉主干下部分支的一个动脉瘤。DMCA和大脑中动脉都有穿支动脉。动脉瘤夹闭术未出现并发症。我们患者中穿支动脉的观察证实DMCA可能有穿支动脉。这在脑动脉瘤手术中是非常重要的考虑因素。此外，在大脑中动脉闭塞的情况下，DMCA可能潜在地作为大脑中动脉区域的侧支血供。
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