Sasaki T, Usami T, Takeda R, Nakagawara J, Sato S, Nakamura J, Suematsu K
No Shinkei Geka. 1984 Jul;12(8):953-8.
Three cases of rare anomalous cerebral artery originating from internal carotid at the level of ophthalmic artery to join the anterior cerebral artery were presented. Case 1. A 32-year-old woman was admitted following subarachnoid hemorrhages. Cerebral angiography disclosed the anterior communicating artery aneurysm and the anomalous vessel originating at rt. carotid siphon to join anterior cerebral artery. Case 2. A 37-year-old woman was admitted with rt. hemiparesis and aphasia. Cerebral angiography revealed the anomalous vessel originating at rt. carotid siphon to join contralateral anterior cerebral artery. Case 3. A 22-day-old male infant with enlarged head was admitted and cerebral angiography was performed. Anomalous vessel originating from internal carotid at the level of ophthalmic artery joined to the azygos anterior cerebral artery. There were only sixteen reported cases of this anomaly including our three cases. Seven aneurysms were associated in six cases, in which four were located in anterior communicating system. The fact that among the cases of this anomaly, ophthalmic artery used to not have normal stem but be fed from middle meningeal or middle cerebral artery suggested that the anomalous vessel had the common stem with ophthalmic artery at certain embryonic stage. These considerations led us to the conclusion that this anomalous vessel might originate from the remnant of anastomotic loop between primitive dorsal and ventral ophthalmic artery.
本文报告3例罕见的异常脑动脉，其起源于眼动脉水平的颈内动脉，汇入大脑前动脉。病例1. 一名32岁女性在蛛网膜下腔出血后入院。脑血管造影显示前交通动脉瘤以及起源于右侧颈动脉虹吸部并汇入大脑前动脉的异常血管。病例2. 一名37岁女性因右侧偏瘫和失语入院。脑血管造影显示起源于右侧颈动脉虹吸部并汇入对侧大脑前动脉的异常血管。病例3. 一名22日龄男性婴儿因头颅增大入院并进行了脑血管造影。起源于眼动脉水平颈内动脉的异常血管汇入奇大脑前动脉。包括我们这3例在内，这种异常情况仅有16例报道。6例中有7个动脉瘤，其中4个位于前交通系统。在这种异常病例中，眼动脉通常没有正常主干，而是由脑膜中动脉或大脑中动脉供血，这一事实表明，异常血管在胚胎发育的特定阶段与眼动脉有共同的主干。基于这些考虑，我们得出结论，这种异常血管可能起源于原始背侧和腹侧眼动脉之间吻合环的残余部分。
