Basilar artery hypoplasia is a rare vascular anomaly of the basilar artery.
Basilar artery hypoplasia is usually accompanied by one or more fo the following:
- persistent carotid-vertebrobasilar anastomoses
- hypoplastic V4 segments of the vertebral arteries
- unilateral or bilateral fetal origin of the posterior cerebral artery
There are some studies suggesting that basilar artery hypoplasia is related to undetermined or lacunar posterior circulation stroke, however, further studies are required to confirm this association 1.
Acquired conditions must be excluded as differential diagnoses, such as:
- atherosclerotic stenosis: commonly involve the middle part of basilar artery, with irregular and non-uniform appearance
- fibromuscular dysplasia: commonly presented as multifocal stenosis and adjacent dilatations
- 1. Olindo S, Khaddam S, Bocquet J et-al. Association between basilar artery hypoplasia and undetermined or lacunar posterior circulation ischemic stroke. Stroke. 2010;41 (10): 2371-4. doi:10.1161/STROKEAHA.110.593145 - Pubmed citation
- 2. Zhang Z, Liu Z, Tian Z et-al. Association between basilar artery hypoplasia and posterior circulation infarction. Zhonghua Yi Xue Za Zhi.94 (47): 3721-5. Pubmed citation
- 3. Chen JJ, Chen DL. A case report of intracranial vertebral-basilar artery hypoplasia presenting with episodic dizziness. Ghana Med J. 2011;44 (3): 123-5. Free text at pubmed - Pubmed citation