Endo Hideki, Ono Hidetoshi, Nakamura Hirohiko
Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido, 060-8570, Japan.
Department of Radiology, Nakamura Memorial Hospital, Sapporo, Hokkaido, Japan.
Surg Radiol Anat. 2025 Jan 7;47(1):55. doi: 10.1007/s00276-024-03556-x.
Although both accessory middle cerebral artery (MCA) and accessory anterior cerebral artery (ACA) are not rare anatomical variations, their combination is rare and there are only a limited number of reports of such combinations.
We report a case of accessory MCA associated with an accessory ACA diagnosed by magnetic resonance angiography (MRA).
A 39-year-old woman visited our hospital because of right facial discomfort. She underwent 1.5-Tesla magnetic resonance imaging and MRA. MRA showed a left accessory MCA originating from the left ACA A1 segment. MRA also showed an accessory ACA that formed a triplicated ACA at its A2 segment.
Careful imaging assessment is important to identify multiple anatomical variations such as an accessory MCA associated with an accessory ACA. In our case, this rare anatomical variation was confirmed by 1.5-Tesla MRA.
虽然大脑中动脉（MCA）分支和大脑前动脉（ACA）分支均为并不罕见的解剖变异，但二者合并出现的情况却很罕见，仅有有限数量的相关报道。
我们报告1例通过磁共振血管造影（MRA）诊断出的大脑中动脉分支合并大脑前动脉分支的病例。
一名39岁女性因右侧面部不适前来我院就诊。她接受了1.5特斯拉磁共振成像及MRA检查。MRA显示一条源自左侧大脑前动脉A1段的左侧大脑中动脉分支。MRA还显示一条大脑前动脉分支，该分支在其A2段形成了三条大脑前动脉。
仔细的影像学评估对于识别诸如大脑中动脉分支合并大脑前动脉分支等多种解剖变异很重要。在我们的病例中，这种罕见的解剖变异通过1.5特斯拉MRA得以证实。
