{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T23:30:06Z","timestamp":1788219006570,"version":"build-2803163510"},"reference-count":14,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>The purpose of this study was to report the potential proneness of a fetal-type posterior cerebral artery (PCA) to develop vascular insufficiency in parent vessel occlusion of distal PCA aneurysms.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Between January 2005 and January 2011, 19 patients (9 females and 10 males) with 20 distal PCA aneurysms (16 dissecting and 4 saccular) were treated with endovascular parent vessel occlusion. The ages of the patients ranged from 5 to 71 years, with a mean age of 40.2 years. Of the 20 aneurysms, 4 were ruptured and 16 were unruptured. One of the unruptured aneurysms was additional to another ruptured aneurysm, and 15 were incidentally discovered. Five aneurysms were smaller than 10 mm, and the other 15 were 10 mm or larger.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>All aneurysms were successfully treated with simultaneous coil occlusion of the aneurysm and the parent PCA. One patient had hemianopia at the initial presentation, and 2 patients had new persistent hemianopia due to insufficient leptomeningeal collateral circulation; in 16 patients with an intact visual field, no hemianopia developed because there was sufficient leptomeningeal collateral circulation. A fetal-type PCA was involved in all 3 patients with hemianopia, which was initially presented or caused by parent vessel occlusion. However, in the patients without hemianopia, an adult-type PCA was involved in all cases.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Endovascular treatment via coil occlusion of the aneurysm as well as the parent artery can be used to cure distal PCA aneurysms. A fetal-type PCA could be an important predictive factor for vascular insufficiency in parent vessel occlusion treatment.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2012.4.jns111788","type":"journal-article","created":{"date-parts":[[2012,5,18]],"date-time":"2012-05-18T14:12:58Z","timestamp":1337350378000},"page":"284-287","source":"Crossref","is-referenced-by-count":25,"title":["Potential proneness of fetal-type posterior cerebral artery to vascular insufficiency in parent vessel occlusion of distal posterior cerebral artery aneurysms"],"prefix":"10.3171","volume":"117","author":[{"given":"Xianli","family":"Lv","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Youxiang","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinjian","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuhan","family":"Jiang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhongxue","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-jns111788","series-title":"Neuroradiology","first-page":"700","article-title":"Endovascular parent artery occlusion in large-giant or fusiform distal posterior cerebral artery aneurysms","volume":"44","author":"Arat","year":"2002"},{"key":"b2-jns111788","series-title":"Stroke","first-page":"2750","article-title":"Anatomy and functionality of leptomeningeal anastomoses: a review","volume":"34","author":"Brozici","year":"2003"},{"key":"b3-jns111788","series-title":"AJNR Am J Neuroradiol","first-page":"27","article-title":"Aneurysms of the posterior cerebral artery: classification and endovascular treatment","volume":"22","author":"Ciceri","year":"2001"},{"key":"b4-jns111788","series-title":"Acta Neurochir (Wien)","first-page":"840","article-title":"Aneurysms of the posterior cerebral artery: do they present specific characteristics?","volume":"138","author":"Ferrante","year":"1996"},{"key":"b5-jns111788","series-title":"AJNR Am J Neuroradiol","first-page":"1128","article-title":"Endovascular occlusion of the posterior cerebral artery for the treatment of p2 segment aneurysms: retrospective review of a 10-year series","volume":"23","author":"Hallacq","year":"2002"},{"key":"b6-jns111788","series-title":"Radiology","first-page":"184","article-title":"Distribution of cerebral blood flow in the circle of Willis","volume":"235","author":"Hendrikse","year":"2005"},{"key":"b7-jns111788","series-title":"Neurol Med Chir (Tokyo)","first-page":"164","article-title":"Aneurysms of the posterior cerebral artery: retrospective review of surgical treatment","volume":"44","author":"Honda","year":"2004"},{"key":"b8-jns111788","series-title":"J Korean Neurosurg Soc","first-page":"134","article-title":"Subarachnoid hemorrhage from a dissecting aneurysm of the posterior cerebral artery in a child: rebleeding after stent-assisted coiling followed by stent-within-stent technique","volume":"49","author":"Lee","year":"2011"},{"key":"b9-jns111788","series-title":"Surg Neurol","first-page":"319","article-title":"Parent vessel occlusion for P2 dissecting aneurysms of the posterior cerebral artery","volume":"71","author":"Lv","year":"2009"},{"key":"b10-jns111788","series-title":"Neuroradiology","first-page":"237","article-title":"Endovascular treatment of posterior cerebral artery aneurysms using detachable coils","volume":"50","author":"Roh","year":"2008"},{"key":"b11-jns111788","series-title":"J Neurosurg","first-page":"15","article-title":"Treatment and outcome in 30 patients with posterior cerebral artery aneurysms","volume":"99","author":"Taylor","year":"2003"},{"key":"b12-jns111788","series-title":"Neurosurgery","first-page":"359","article-title":"Surgical approaches for the treatment of aneurysms on the P2 segment of the posterior cerebral artery","volume":"47","author":"Terasaka","year":"2000"},{"key":"b13-jns111788","series-title":"Cerebrovasc Dis","first-page":"217","article-title":"The fetal variant of the circle of Willis and its influence on the cerebral collateral circulation","volume":"22","author":"van Raamt","year":"2006"},{"key":"b14-jns111788","article-title":"Is stent-assisted coiling effective for the treatment of dissecting aneurysm?","author":"Yoon"}],"container-title":["Journal of 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article"],"short-title":[],"issued":{"date-parts":[[2012,8]]},"references-count":14,"journal-issue":{"issue":"2"},"URL":"https:\/\/doi.org\/10.3171\/2012.4.jns111788","relation":{},"ISSN":["0022-3085","1933-0693"],"issn-type":[{"value":"0022-3085","type":"print"},{"value":"1933-0693","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,8]]}}}