Persistent hypoglossal artery
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- Merrow, A.C. Pediatr Radiol (2010) 40: 162. doi:10.1007/s00247-010-1773-9
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Of the four primitive carotid-basilar anastomoses that normally regress in utero, the hypoglossal artery is the second most likely (after the trigeminal artery) to persist postnatally (0.03–0.26% of patients) . The vertebral and posterior communicating arteries are frequently absent or hypoplastic with the carotid of origin therefore mainly supplying the brainstem . While typically incidental in the pediatric population, consideration should be given to this artery in skull base surgery, Wada testing and carotid injuries or interventions .