Nguyen Anthony V, Benardete Ethan A
Department of Neurosurgery, Baylor Scott and White Health, Temple, TX, USA.
Neurointervention. 2023 Mar;18(1):63-66. doi: 10.5469/neuroint.2022.00486. Epub 2023 Feb 20.
A middle-aged patient presented with subarachnoid hemorrhage and was found to have a ruptured superior cerebellar artery (SCA) aneurysm arising from the origin of a rare anastomotic branch between the right SCA and right posterior cerebral artery (PCA). The aneurysm was secured by transradial coil embolization, and the patient made a good functional recovery. This case demonstrates an aneurysm arising from an anastomotic branch between the SCA and PCA, which may represent a remnant of a persistent primordial hindbrain channel. Although variations in basilar artery branches are common, aneurysms rarely can form at the site of seldom- seen anastomoses between the branches of the posterior circulation. The complex embryology of these vessels, which includes anastomoses and the involution of primitive arteries, may have contributed to the development of this aneurysm arising from an SCA-PCA anastomotic branch.
一名中年患者出现蛛网膜下腔出血，经检查发现其右侧小脑上动脉（SCA）与右侧大脑后动脉（PCA）之间一条罕见吻合支起始处的小脑上动脉瘤破裂。通过经桡动脉线圈栓塞术成功处理了该动脉瘤，患者功能恢复良好。该病例显示了一个起自SCA与PCA吻合支的动脉瘤，这可能代表了持续存在的原始后脑通道的残余。虽然基底动脉分支变异很常见，但后循环分支间少见吻合部位很少形成动脉瘤。这些血管复杂的胚胎学，包括吻合和原始动脉的退化，可能促使了这个起自SCA-PCA吻合支的动脉瘤的形成。
