Clinical Analysis of Embryonic Posterior Cerebral Artery

Objective: To understand the clinical characteristics of patients with embryonic posterior cerebral artery and its correlation with abnormal vascular development. Methods: The clinical data of 396 patients with embryonic posterior cerebral artery confirmed by magnetic resonance angiography (MRA) and computed tomography angiography (CTA) were analyzed. Results: Two-hundred patients had clinical manifestations of posterior circulation ischemia, including recurrent dizziness, vertigo, and tinnitus; 45 had headaches, 97 had limb weakness, and 16 patients had syncope or impaired consciousness. Seventy-six patients with circulatory infarction were admitted to the hospital. There were 251 patients with history of hypertension, 74 with diabetes, 113 with hyperlipidemia, 13 with dominant vertebral artery, 10 with intracranial aneurysm, and 19 with absence of A1 segment of the anterior cerebral artery (considering developmental variation). Conclusion: Embryonic posterior cerebral artery develops abnormally during the embryonic period, often accompanied by abnormal vascular access. Due to abnormal hemodynamics, the incidence of posterior circulation ischemia, aneurysm, and infarction increases in such patients.