Triantafyllou George, Melissanidis Savvas, Olewnik Łukasz, Papanagiotou Panagiotis, Tsakotos George, Zielinska Nicol, Vassiou Katerina, Piagkou Maria
Department of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece.
Radiological Clinic, Asklipios MEdica, Veroia, Greece.
Folia Morphol (Warsz). 2024 Nov 22. doi: 10.5603/fm.103246.
The cerebral arterial circle variants are well-described due to their clinical significance for neurosurgeons and neuroradiologists.
This magnetic resonance angiography (MRA) report describes the unusual coexistence of three cerebral variants incidentally identifiedin a 44-year-old female patient.
The right-sided first segment (A1) of the anterior cerebral artery (ACA) was absent, and both the posterior cerebral arteries (PCAs) originated from the internal carotid arteries (ICAs). Thus, the unilateral A1 segment absence coexisted with a bilateral PCA of fetal origin. These variants' coexistence significantly disrupts the patient's primary collateral pathway.
The clinical significance and consequences of such variants after stroke or transient ischemic attack cannot be overstated, underscoring the importance of the current imaging findings in understanding and managing these conditions.
由于脑动脉环变异对神经外科医生和神经放射科医生具有临床意义，因此对其已有充分描述。
这份磁共振血管造影（MRA）报告描述了一名44岁女性患者偶然发现的三种脑变异异常共存的情况。
大脑前动脉（ACA）右侧第一段（A1）缺如，双侧大脑后动脉（PCA）均起源于颈内动脉（ICA）。因此，单侧A1段缺如与双侧胎儿起源的PCA共存。这些变异的共存显著破坏了患者的主要侧支循环途径。
此类变异在中风或短暂性脑缺血发作后的临床意义和后果再怎么强调都不为过，这突出了当前影像学检查结果在理解和处理这些病症方面的重要性。
