{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T23:30:09Z","timestamp":1788219009301,"version":"build-2803163510"},"reference-count":24,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2015,10]]},"abstract":"<jats:sec>\n<jats:title>OBJECT<\/jats:title>\n<jats:p>P<jats:sub>2<\/jats:sub> segment and distal aneurysms are rare lesions of the cerebrovascular system. The efficacy and safety of endovascular occlusion for these types of aneurysms remain controversial. The aim of this study was to reveal risk factors for endovascular parent artery occlusion of ruptured P<jats:sub>2<\/jats:sub> segment and distal aneurysms.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>METHODS<\/jats:title>\n<jats:p>Between March 2010 and November 2012, 812 patients with a ruptured intracranial aneurysm were admitted to the authors' hospital. Among them, 11 patients presented with P<jats:sub>2<\/jats:sub> segment and distal posterior cerebral artery (PCA) aneurysms. These patients were subjected to endovascular treatment. Periprocedural data and clinical and angiographic records were studied retrospectively.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>RESULTS<\/jats:title>\n<jats:p>Of the patients with a ruptured PCA aneurysm, 2 of them underwent selective aneurismal coiling, and the remaining patients were treated with simultaneous occlusion of the parent artery. Patients with an adult-type PCA (n = 6), treated with either selective coiling or simultaneous parent artery occlusion, had no serious neurological deficits on follow-up. Four patients with a fetal-type PCA that was also occluded intraoperatively exhibited newly developed permanent paralysis and hemianopsia. However, 1 patient with a fetal-type PCA aneurysm that was selectively coiled recovered without complications. No recanalization was observed in any of the treated aneurysms.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>CONCLUSIONS<\/jats:title>\n<jats:p>Endovascular occlusion of an aneurysm and its parent artery is a safe and effective method for managing adult-type P<jats:sub>2<\/jats:sub> segment and distal aneurysms. However, the authors' clinical data suggest that this method is of high risk for patients with fetal-type PCA aneurysms.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2014.9.jns1442","type":"journal-article","created":{"date-parts":[[2015,3,13]],"date-time":"2015-03-13T14:15:04Z","timestamp":1426256104000},"page":"906-914","source":"Crossref","is-referenced-by-count":27,"title":["Fetal-type posterior cerebral artery: the pitfall of parent artery occlusion for ruptured P2 segment and distal aneurysms"],"prefix":"10.3171","volume":"123","author":[{"given":"Jing","family":"Xu","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liang","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziheng","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Vascular and Endovascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xianyi","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianmin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-jns1442","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"572","DOI":"10.3171\/jns.1984.60.3.0572","article-title":"Anomalies of the posterior communicating artery and their potential clinical significance","volume":"60","author":"Bisaria","year":"1984"},{"key":"b2-jns1442","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"501","DOI":"10.3171\/jns.1986.64.3.0501","article-title":"Fusiform posterior cerebral artery aneurysm treated with excision and end-to-end anastomosis. 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