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Bilateral Fetal-Type Posterior Cerebral Arteries with Vertebrobasilar Hypoplasia: A Rare Vascular Variant Presenting as Recurrent Posterior Circulation Stroke

Year: 2025

Type: article

Abstract: Background: Bilateral fetal-type posterior cerebral artery (fPCA) is a rare anatomic variant of the circle of Willis. Its clinical significance, particularly when associated with vertebrobasilar hypoplasia, is poorly understood. Case presentation: We report a 58-year-old man with recurrent posterior circulation ischemic events. His first episode was characterized by left-sided ataxia, followed six months later by right-sided sensory loss. MRI revealed multiple chronic lacunar infarcts, small vessel ischemic changes, and cortical atrophy. MR angiography demonstrated bilateral fPCA with vertebrobasilar hypoplasia, and MR venography revealed hypoplastic left transverse and sigmoid sinuses. Conclusion: This case illustrates the rare coexistence of bilateral fPCA and vertebrobasilar hypoplasia as a potential mechanism for recurrent posterior circulation ischemia. Recognition of such variants may help refine prognosis and guide preventive strategies.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.18228628

Author: International Journal of Medical Science and Advanced Clinical Research (IJMACR)

Language: English

Topic: Cerebrovascular and Carotid Artery Diseases

Subfield: Pulmonary and Respiratory Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

OpenAlex ID: W7123875378

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