{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T04:38:10Z","timestamp":1770352690676,"version":"3.49.0"},"reference-count":30,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"2","license":[{"start":{"date-parts":[[2024,1,8]],"date-time":"2024-01-08T00:00:00Z","timestamp":1704672000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,1,8]]},"abstract":"\n BACKGROUND<\/jats:title>\n Extracranial internal carotid artery aneurysms (EICAs) are rare. Although a high mortality risk has been reported in nonoperated cases, the optimal treatment for EICAs remains unknown.<\/jats:p>\n <\/jats:sec>\n \n OBSERVATIONS<\/jats:title>\n A 79-year-old female presented with painless swelling in the right neck. Imaging revealed a giant EICA with a maximum diameter of 3.2 cm. Superficial temporal artery\u2013middle cerebral artery bypass and internal carotid artery (ICA) trapping were performed. Because the distal aneurysm edge was at the C1 level, the distal portion of the aneurysm was occluded by endovascular coiling, and the proximal portion was surgically ligated. Blood flow into the aneurysm disappeared after the operation. Three years postsurgery, enlargement of the aneurysm with blood flow from the ascending pharyngeal artery (APA) was detected. The EICA was resected after coiling the APA and ligating both ends of the aneurysm. Pathologically, neovascularization within the aneurysm wall was observed.<\/jats:p>\n <\/jats:sec>\n \n LESSONS<\/jats:title>\n Even if blood flow into an EICA disappears after ICA trapping, the EICAs can enlarge due to neovascularization from the neighboring artery. From the outset, removal of the aneurysm should be considered as a radical treatment strategy for giant EICAs.<\/jats:p>\n <\/jats:sec>","DOI":"10.3171\/case23617","type":"journal-article","created":{"date-parts":[[2024,1,8]],"date-time":"2024-01-08T18:53:03Z","timestamp":1704739983000},"source":"Crossref","is-referenced-by-count":1,"title":["Recurrence of an extracranial internal carotid artery aneurysm treated with STA-MCA bypass and trapping due to neovascularization from an ascending pharyngeal artery: illustrative case"],"prefix":"10.3171","volume":"7","author":[{"given":"Keijiro","family":"Shomura","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Fukui Prefectural Hospital, Fukui, Japan"},{"name":"Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomoya","family":"Kamide","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takehiro","family":"Uno","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan"},{"name":"Department of Neurosurgery, Ishikawa Prefectural Central Hospital, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kouichi","family":"Misaki","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoko","family":"Nakada","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan"},{"name":"Department of Pathology and Laboratory Medicine, Hokuriku Brain and Neuromuscular Disease Center, National Hospital Organization Iou National Hospital, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yukinobu","family":"Ito","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hemragul","family":"Sabit","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akifumi","family":"Yoshikawa","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Kanazawa Medical University, Uchinada, Ishikawa, Japan; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masanao","family":"Mohri","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Toyama City Hospital, Toyama, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naoyuki","family":"Uchiyama","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Ishikawa Prefectural Central Hospital, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsutoshi","family":"Nakada","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"issue":"4","key":"b1","series-title":"Acta Chir Belg","first-page":"407","article-title":"Aneurysm of the kinked extracranial internal carotid artery case report and review of the literature","volume":"105","author":"Alpagut U","year":"2005","unstructured":"Alpagut U, Ugurlucan M, Kafali E, Aneurysm of the kinked extracranial internal carotid artery case report and review of the literature. 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