Accessory posterior cerebral artery as a duplicate anterior choroidal artery.

IF 1.4 4区医学 Q2 Medicine

Surgical and Radiologic Anatomy Pub Date : 2025-01-22 DOI:10.1007/s00276-024-03561-0

Hideki Endo, Hidetoshi Ono, Toshiichi Watanabe, Keiji Hara, Yohei Yamaguchi, Yasuyuki Tatsuta, Hirohiko Nakamura

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引用次数: 0

Abstract

Purpose: Anatomical variations in the anterior choroidal artery (AChA) and/or the posterior cerebral artery (PCA) are rare. Hyperplastic AChA is an anatomical variant supplying both the AChA area and the PCA area. In accessory PCA, a hyperplastic AChA supplies part of the PCA territory. To our knowledge, there are no previous reports of accessory PCA associated with duplicated AChAs.

Methods: We report a case of accessory PCA as a duplicated AChA associated with contralateral accessory middle cerebral artery, diagnosed by digital subtraction angiography.

Results: A 34-year-old man visited our hospital because of headache and neck pain. Magnetic resonance imaging showed flow voids around the left medial temporal lobe. Magnetic resonance angiography showed vascular structures in the left PCA. Left internal carotid angiography revealed the accessory PCA supplying not only the AChA (plexal segment) territory but also part of the PCA (anterior and posterior temporal arteries) territory. Three-dimensional rotational angiography revealed a tiny branch proximal to accessory PCA. Careful assessment revealed that the tiny branch perfused the left AChA (cisternal segment) territory. Therefore, we made a diagnosis of duplicated AChAs. Right internal carotid angiography also showed the accessory middle cerebral artery originating from the anterior cerebral artery (proximal A1 segment).

Conclusion: Careful imaging assessment is important to identify the rare anatomical variations seen in this case, in which three-dimensional rotational angiography was useful and provided a better understanding of the vascular structure, including tiny vessels.

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副脑后动脉作为重复的脉络膜前动脉。

目的：脉络膜前动脉（AChA）和/或大脑后动脉（PCA）的解剖变异是罕见的。增生性AChA是一种解剖学变异，同时供应AChA区和PCA区。在辅助PCA中，增生的AChA提供部分PCA区域。据我们所知，以前没有与重复acha相关的辅助PCA的报道。方法：我们报告1例副PCA为伴对侧副大脑中动脉的重复AChA，通过数字减影血管造影诊断。结果：一名34岁男性因头痛、颈部疼痛来我院就诊。磁共振成像显示左侧内侧颞叶周围有血流空洞。磁共振血管造影显示左主干动脉血管结构。左侧颈内动脉造影显示副主动脉不仅支配神经丛段，而且支配部分颞前、后动脉。三维旋转血管造影显示一个小分支近副主动脉。仔细评估显示，细小的分支灌注左AChA（池段）区域。因此，我们做出了重复acha的诊断。右颈内动脉造影也显示大脑副中动脉起源于大脑前动脉（近A1段）。结论：仔细的影像学评估对于识别本病例中罕见的解剖变异非常重要，其中三维旋转血管造影是有用的，可以更好地了解血管结构，包括微小血管。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surgical and Radiologic Anatomy Medicine-Pathology and Forensic Medicine

CiteScore

2.40

自引率

14.30%

发文量

期刊介绍： Anatomy is a morphological science which cannot fail to interest the clinician. The practical application of anatomical research to clinical problems necessitates special adaptation and selectivity in choosing from numerous international works. Although there is a tendency to believe that meaningful advances in anatomy are unlikely, constant revision is necessary. Surgical and Radiologic Anatomy, the first international journal of Clinical anatomy has been created in this spirit. Its goal is to serve clinicians, regardless of speciality-physicians, surgeons, radiologists or other specialists-as an indispensable aid with which they can improve their knowledge of anatomy. Each issue includes: Original papers, review articles, articles on the anatomical bases of medical, surgical and radiological techniques, articles of normal radiologic anatomy, brief reviews of anatomical publications of clinical interest. Particular attention is given to high quality illustrations, which are indispensable for a better understanding of anatomical problems. Surgical and Radiologic Anatomy is a journal written by anatomists for clinicians with a special interest in anatomy.