BACKGROUND Connection between the duplication of the middle cerebral artery (DMCA) and the presence of multiple aneurysms has been described in a small number of cases. CASE PRESENTATION The presence of a rare type of DMCA associated with cerebral aneurysms was diagnosed in 56 year old woman after a rupture of an aneurysm on the dorsal segment of the DMCA. .. The presence of equal diameters of branches of the DMCA and anterior cerebral artery (ACA) could be recorded as trifurcation of the carotid internal artery (ICA). However, due to the anastomosis of the DMCA branches in the area of the M2 segment, the recorded anatomical change represented a segmental duplication of MCA. Three aneurysms that were directly related to the segmental DMCA were diagnosed. CONCLUSIONS Anatomical variation by type of segmental DMCA is a rare subtype of DMCA. The presence of multiple aneurysms associated with this type of anatomical variation in MCA indicates their high hemodynamic instability.

中文翻译：

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多发性脑动脉瘤与罕见的大脑中动脉节段重复型之间的相关性。

背景技术在少数情况下，已经描述了大脑中动脉重复（DMCA）与多发动脉瘤之间的联系。病例介绍DMCA背侧动脉瘤破裂后，在56岁的女性中诊断出一种罕见类型的DMCA与脑动脉瘤相关。.. DMCA和前脑动脉（ACA）的分支直径相等，可以记录为颈内动脉（ICA）的三叉。但是，由于DMCA分支在M2段区域内进行了吻合，因此记录的解剖学变化代表了MCA的节段重复。诊断出与分段DMCA直接相关的三个动脉瘤。结论按节段DMCA类型的解剖学变异是DMCA的罕见亚型。