Canovetti Silvia, Pasquali Livia, Di Salle Gianfranco, Lucchi Giacomo, Donatelli Graziella, Cosottini Mirco
Neuroradiology Unit, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy.
Department of Clinical and Experimental Medicine, Neurology Unit, University of Pisa, Pisa, Italy.
Radiol Case Rep. 2022 Sep 5;17(11):4132-4134. doi: 10.1016/j.radcr.2022.08.001. eCollection 2022 Nov.
Abducens nerve palsy is a common ocular motor paralysis with a broad set of etiopathogenetic causes. Magnetic resonance imaging is a key diagnostic technique to investigate organic causes of sixth nerve palsy, as it allows a detailed representation of the course of the nerve, particularly in its intracisternal tract. Anatomical variants of the sixth cranial nerve comprise duplications and fenestrations in various traits. Anatomical variants of cerebellar arteries have also been described. We report the case of a patient with abducens nerve palsy presumably related to a neurovascular conflict due to a peculiar anatomical variant, which consists in a cerebellar artery passing through the intracisternal duplication of the abducens nerve.
外展神经麻痹是一种常见的眼球运动麻痹，病因广泛。磁共振成像（MRI）是研究第六神经麻痹器质性病因的关键诊断技术，因为它能详细显示神经走行，尤其是在脑池段。第六颅神经的解剖变异包括不同特征的重复和开窗。也有小脑动脉解剖变异的描述。我们报告一例外展神经麻痹患者，可能与一种特殊解剖变异导致的神经血管冲突有关，该变异表现为一条小脑动脉穿过脑池段重复的外展神经。
