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This case presents a rare persistent carotico\u2013basilar anastomosis which resulted in basilar occlusion via the persistent hypoglossal artery and coincident absence of contralateral vertebral arterial access due to a left vertebral artery terminating in the left posterior inferior cerebellar artery. Preoperative recognition of this anatomy afforded by review of cross-sectional imaging was critical to success during this emergent procedure.<\/jats:p>","DOI":"10.1136\/bcr-2016-012859","type":"journal-article","created":{"date-parts":[[2017,1,27]],"date-time":"2017-01-27T14:30:31Z","timestamp":1485527431000},"page":"bcr2016012859","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Basilar stroke from a persistent hypoglossal artery"],"prefix":"10.1136","volume":"2017","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3634-4692","authenticated-orcid":false,"given":"Alfred P","family":"See","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacob F","family":"Baranoski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bruno C","family":"Flores","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Ducruet","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Felipe C","family":"Albuquerque","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2017,1,27]]},"reference":[{"key":"2025042702332158000_2017.jan27_1.bcr2016012859.1","doi-asserted-by":"publisher","DOI":"10.1016\/S1474-4422(09)70173-5"},{"key":"2025042702332158000_2017.jan27_1.bcr2016012859.2","unstructured":"Osborn A . 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