A 26-year-old patient underwent a successful ablation of Grade 2 diffuse astrocytoma of the right parietal lobe. The postoperative computed tomography angiography with 3D modeling revealed a residual avascular porencephalic cyst. Otherwise, multiple arterial variants have been encountered. First, the left A1 segment was fenestrated, and three A2 segments arose from the anterior communicating artery. The middle A2 segment was dominant and supplied left callosomarginal and both pericallosal territories. The right A2 segment supplied the right callosomarginal territory, while the left A1 was limited to the left orbitofrontal and frontopolar territories. This configuration represents a triplicated anterior cerebral artery with an unusual branching pattern not included in the classification of Baptista. In addition, on both sides, superior cerebellar artery duplication was present, with one arising from the basilar artery and the other from the P1 segment of the ipsilateral posterior cerebral artery. The left lower superior cerebellar artery was early bifurcated. It is the first time such a cerebrovascular configuration has been reported. Because of the several clinical and surgical applications of the anterior cerebral artery and superior cerebellar artery variants, this case report is of utmost interest to anatomists, radiologists, and neurosurgeons.

一名 26 岁患者成功接受了右顶叶 2 级弥漫性星形细胞瘤消融术。术后计算机断层扫描血管造影与 3D 模型显示残留的无血管脑孔囊肿。否则，会遇到多种动脉变异。首先，左侧 A1 段开窗，三个 A2 段从前交通动脉发出。中间 A2 段占主导地位，供应左胼体边缘和两个胼周区域。右侧 A2 段提供右侧胼缘区域，而左侧 A1 仅限于左侧眶额和额极区域。这种结构代表了三重大脑前动脉，具有不寻常的分支模式，不包括在 Baptista 的分类中。此外，两侧均存在重复的小脑上动脉，其中一根源自基底动脉，另一根源自同侧大脑后动脉的P1段。左小脑上下动脉早期分叉。这是首次报道这种脑血管结构。由于大脑前动脉和小脑上动脉变异体的多种临床和外科应用，本病例报告引起了解剖学家、放射科医生和神经外科医生的极大兴趣。