{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,10]],"date-time":"2026-11-10T15:22:27Z","timestamp":1794324147971,"version":"4.9.0"},"reference-count":12,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2010,10]]},"abstract":"<jats:p>The authors report the successful removal of Onyx HD-500 from an aneurysm sac by means of ultrasonic aspiration. This 46-year-old woman presented with progressive spasms of her left arm and leg due to mass effect and compression on the right cerebral peduncle 5 years after endovascular treatment of an unruptured giant posterior communicating artery aneurysm with Onyx HD-500. No filling of the aneurysm was detected on angiography.<\/jats:p>\n                  <jats:p>The patient underwent a right pterional craniotomy and the aneurysm was opened to remove the Onyx mass. However, contrary to expectations, the aneurysm was still patent, filling with blood between the Onyx mass and the aneurysm wall. Under temporary clipping of the carotid artery, the Onyx mass within the aneurysm was removed in a piecemeal fashion using an ultrasonic aspirator and the aneurysm was then successfully clipped. The patient experienced significant improvement of the spasm after surgery. Angiography showed complete occlusion of the posterior communicating artery aneurysm.<\/jats:p>\n                  <jats:p>It is rarely necessary to remove embolization material such as Onyx HD-500, and little is known about the most appropriate surgical technique. This case report demonstrates that removal can be safely accomplished by means of ultrasonic aspiration.<\/jats:p>","DOI":"10.3171\/2009.10.jns09668","type":"journal-article","created":{"date-parts":[[2009,11,6]],"date-time":"2009-11-06T09:50:29Z","timestamp":1257501029000},"page":"770-773","source":"Crossref","is-referenced-by-count":3,"title":["Microsurgical removal of Onyx HD-500 from an aneurysm for relief of brainstem compression"],"prefix":"10.3171","volume":"113","author":[{"given":"Katrin","family":"Van Loock","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomas","family":"Menovsky","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"BRAIN (Brain Research Center Antwerp for Innovative and Interdisciplinary Neuromodulation), University Hospital Antwerp, Edegem, Belgium; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maurits H.","family":"Voormolen","sequence":"additional","affiliation":[{"name":"Radiology and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark","family":"Plazier","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"BRAIN (Brain Research Center Antwerp for Innovative and Interdisciplinary Neuromodulation), University Hospital Antwerp, Edegem, Belgium; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"Parizel","sequence":"additional","affiliation":[{"name":"Radiology and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dirk","family":"De Ridder","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"BRAIN (Brain Research Center Antwerp for Innovative and Interdisciplinary Neuromodulation), University Hospital Antwerp, Edegem, Belgium; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew I. R.","family":"Maas","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juha A.","family":"Hernesniemi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Helsinki University Hospital, Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-jns09668","series-title":"J Neurosurg","first-page":"706","article-title":"Intrasaccular combination of metallic coils and Onyx liquid embolic agent for the endovascular treatment of cerebral aneurysms","volume":"105","author":"Cekirge","year":"2006"},{"key":"b2-jns09668","series-title":"Prog Brain Res","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1016\/S0079-6123(07)66039-7","article-title":"Tinnitus in vascular conflict of the eighth cranial nerve: a surgical pathophysiological approach to ABR changes","volume":"166","author":"De Ridder","year":"2007"},{"key":"b3-jns09668","series-title":"Clin Neurosurg","first-page":"181","article-title":"Operative techniques and clinicopathologic correlation in the surgical treatment of cranial rhizopathies (honored guest lecture)","volume":"44","author":"Jannetta","year":"1997"},{"key":"b4-jns09668","series-title":"Minim Invasive Neurosurg","first-page":"39","article-title":"Visual worsening after incomplete coiling of a small asymptomatic aneurysm: case report and review of the literature","volume":"52","author":"Killer","year":"2009"},{"key":"b5-jns09668","series-title":"Zentralbl Neurochir","first-page":"8","article-title":"Neurosurgical management of previously coiled recurrent intracranial aneurysms","volume":"68","author":"K\u00f6nig","year":"2007"},{"key":"b6-jns09668","series-title":"J Neurosurg","first-page":"956","article-title":"Unruptured aneurysms presenting with mass effect symptoms: response to endosaccular treatment with Guglielmi detachable coils. Part I Symptoms of cranial nerve dysfunction","volume":"89","author":"Malisch","year":"1998"},{"key":"b7-jns09668","series-title":"AJNR Am J Neuroradiol","first-page":"39","article-title":"Cerebral Aneurysm Multicenter European Onyx (CAMEO) trial: results of a prospective observational study in 20 European centers","volume":"25","author":"Molyneux","year":"2004"},{"key":"b8-jns09668","series-title":"J Neurosurg","first-page":"705","article-title":"Neurological deterioration after coil embolization of a giant basilar apex aneurysm with resolution following parent artery clip ligation. Case report and review of the literature","volume":"97","author":"Russell","year":"2002"},{"key":"b9-jns09668","series-title":"Neurosurgery","first-page":"E1217","article-title":"Surgical decompression and coil removal for the recovery of vision after coiling and proximal occlusion of a clinoidal segment aneurysm: technical case report","volume":"58","author":"Tawk","year":"2006"},{"key":"b10-jns09668","series-title":"Neurosurgery","first-page":"300","article-title":"Surgically treated aneurysms previously coiled: lessons learned","volume":"54","author":"Veznedaroglu","year":"2004"},{"key":"b11-jns09668","series-title":"AJNR Am J Neuroradiol","first-page":"1909","article-title":"Treatment and follow-up of 22 unruptured wide-necked intracranial aneurysms of the internal carotid artery with Onyx HD 500","volume":"26","author":"Weber","year":"2005"},{"key":"b12-jns09668","series-title":"Neurosurgery","first-page":"283","article-title":"Neurosurgical management of intracranial aneurysms previously treated with endovascular therapy","volume":"52","author":"Zhang","year":"2003"}],"container-title":["Journal of Neurosurgery"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/113\/4\/article-p770.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/113\/4\/article-p770.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/113\/4\/article-p770.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T00:37:04Z","timestamp":1679877424000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/113\/4\/article-p770.xml"}},"subtitle":["Case report"],"short-title":[],"issued":{"date-parts":[[2010,10]]},"references-count":12,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.3171\/2009.10.jns09668","relation":{},"ISSN":["0022-3085","1933-0693"],"issn-type":[{"value":"0022-3085","type":"print"},{"value":"1933-0693","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,10]]}}}