Stevenson Charles B, Chambless Lola B, Rini David A, Thompson Reid C
Division of Pediatric Neurosurgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
Surg Neurol Int. 2011;2:89. doi: 10.4103/2152-7806.82371. Epub 2011 Jun 30.
While variation within the anterior cerebrovascular circulation is common, an infraoptic course of the proximal anterior cerebral artery (ACA), or infraoptic A1, is a relatively rare cerebrovascular anomaly. Associations with suprasellar neoplasms may occur, and accurate identification of this aberrant vessel during dissection is crucial to preventing vascular injury or stroke.
We present the first reported case of surgically confirmed bilateral infraoptic A1 arteries associated with a craniopharyngioma. We review the relevant magnetic resonance imaging (MRI), angiographic, and intraoperative anatomic features of the infraoptic A1 to emphasize the importance of these variables when planning and performing surgery in the region of the anterior communicating artery (AComm) complex.
Awareness of the existence and clinical significance of this unusual anomaly can facilitate its recognition on preoperative studies and during dissection in the suprasellar space, allowing neurosurgeons to adjust operative plans accordingly.
虽然前脑血管循环内的变异很常见，但大脑前动脉近端（ACA）或视下A1段走行于视交叉下方是一种相对罕见的脑血管异常。它可能与鞍上肿瘤有关，在解剖过程中准确识别这种异常血管对于预防血管损伤或中风至关重要。
我们报告首例经手术证实的双侧视下A1段动脉与颅咽管瘤相关的病例。我们回顾了视下A1段的相关磁共振成像（MRI）、血管造影和术中解剖特征，以强调在计划和实施前交通动脉（AComm）复合体区域手术时这些变量的重要性。
了解这种不寻常异常的存在及其临床意义有助于在术前研究和鞍上间隙解剖过程中识别它，使神经外科医生能够相应地调整手术计划。
