{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T13:51:06Z","timestamp":1761745866131,"version":"build-2065373602"},"reference-count":14,"publisher":"BMJ","issue":"10","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2025,10,2]]},"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:p>Internal carotid artery (ICA) occlusion typically affects the anterior circulation. However, in rare cases, it may present exclusively as posterior circulation ischaemia, particularly in the presence of anatomical variants such as a persistent trigeminal artery (PTA), an abnormal embryonic connection between the ICA and the basilar artery (BA).<\/jats:p>\n                  <jats:p>We report the case of a patient with ICA and PTA occlusion who presented clinically with a posterior circulation stroke. The initial National Institutes of Health Stroke Scale score was 20. CT angiography revealed occlusion of the ICA and distal BA. Following ICA angioplasty, a thrombosed PTA was identified. A combined thrombectomy technique (aspiration and stent retriever) was performed, achieving effective recanalisation of the PTA and posterior circulation, with a favourable clinical outcome.<\/jats:p>","DOI":"10.1136\/bcr-2025-267177","type":"journal-article","created":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T10:10:45Z","timestamp":1761732645000},"page":"e267177","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Thrombectomy in basilar stroke via persistent trigeminal artery secondary to internal carotid artery occlusion"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-2033-7433","authenticated-orcid":false,"given":"Julia","family":"Castanos-Cortina","sequence":"first","affiliation":[{"name":"Radiology, Hospital Universitario Fundaci\u00f3n Alcorc\u00f3n, Alcorc\u00f3n, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0662-9371","authenticated-orcid":false,"given":"Jose Carlos","family":"Mendez","sequence":"additional","affiliation":[{"name":"Radiology, Hospital Ramon y Cajal, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastian","family":"Garc\u00eda Madrona","sequence":"additional","affiliation":[{"name":"Neurology, Hospital Ramon y Cajal, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Consuelo","family":"Matute Lozano","sequence":"additional","affiliation":[{"name":"Neurology, Hospital Ramon y Cajal, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2025,10,29]]},"reference":[{"key":"2025102903100942000_18.10.e267177.1","article-title":"Persistent Trigeminal Artery Playing a Protective Role in a Case of Vertebral Artery Dissection and 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Stroke","volume":"148","author":"Engelhardt","year":"2021","journal-title":"World Neurosurg"},{"key":"2025102903100942000_18.10.e267177.5","doi-asserted-by":"crossref","DOI":"10.1186\/s12883-016-0559-6","article-title":"Successful recanalization for internal carotid artery occlusion with persistent primitive trigeminal artery manifesting only as ischemia of the posterior circulation","volume":"16","author":"Hiramatsu","year":"2016","journal-title":"BMC Neurol"},{"key":"2025102903100942000_18.10.e267177.6","doi-asserted-by":"publisher","DOI":"10.1258\/ar.2011.110191"},{"key":"2025102903100942000_18.10.e267177.7","doi-asserted-by":"crossref","first-page":"400","DOI":"10.3340\/jkns.2016.59.4.400","article-title":"Acute Ischemic Stroke Involving Both Anterior and Posterior Circulation Treated by Endovascular Revascularization for Acute Basilar Artery Occlusion via Persistent Primitive Trigeminal Artery","volume":"59","author":"Imahori","year":"2016","journal-title":"J Korean Neurosurg 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