{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T09:17:17Z","timestamp":1792660637390,"version":"4.5.0"},"reference-count":21,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2015,2,16]],"date-time":"2015-02-16T00:00:00Z","timestamp":1424044800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Neuroimaging"],"published-print":{"date-parts":[[2015,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>BACKGROUND AND PURPOSE<\/jats:title><jats:p>Traumatic intracranial pseudoaneurysms present a challenge for treatment. Traditionally these lesions have required a deconstructive approach consisting of vessel sacrifice since their fragile nature often makes direct microsurgical repair or coil embolization hazardous. As a high\u2010viscosity liquid embolic agent that results in immediate, vessel sparing aneurysm occlusion, Onyx\u2010HD 500 represents a uniquely efficacious tool for this clinical situation.<\/jats:p><\/jats:sec><jats:sec><jats:title>CASE SUMMARY<\/jats:title><jats:p>We report the case of a 56\u2010year\u2010old right\u2010handed gentleman who suffered a vascular injury to the ICA during revision transsphenoidal surgery for a recurrent pituitary macroadenoma. The patient was initially treated with nasal packing, but after recurrent episodes of epistaxis and a CT angiogram demonstrating a large traumatic ICA pseudoaneurysm, the patient was referred for invasive treatment. Given the presumed fragility of the lesion, embolization with Onyx\u2010HD 500 was chosen in order to safely achieve immediate aneurysm occlusion without the need for vessel sacrifice. After an early recurrence due to incomplete initial embolization, the patient went on to complete occlusion without further hemorrhage.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSION<\/jats:title><jats:p>This case illustrates the utility of a high\u2010viscosity liquid embolic agent in providing immediate protection from rehemorrhage by occluding a large ruptured pseudoaneurysm of the proximal intracranial ICA, while sparing the parent artery.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jon.12221","type":"journal-article","created":{"date-parts":[[2015,2,16]],"date-time":"2015-02-16T05:35:48Z","timestamp":1424064948000},"page":"656-659","source":"Crossref","is-referenced-by-count":8,"title":["Onyx\u2010HD 500 Embolization of a Traumatic Internal Carotid Artery Pseudoaneurysm after Transsphenoidal Surgery"],"prefix":"10.1111","volume":"25","author":[{"given":"Akshal S.","family":"Patel","sequence":"first","affiliation":[{"name":"Department of Neurosurgery Penn State Hershey Medical Center  Hershey PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tristram G.","family":"Horton","sequence":"additional","affiliation":[{"name":"Department of Radiology Penn State Hershey Medical Center  Hershey PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"Kalapos","sequence":"additional","affiliation":[{"name":"Department of Radiology Penn State Hershey Medical Center  Hershey PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin M.","family":"Cockroft","sequence":"additional","affiliation":[{"name":"Department of Radiology Penn State Hershey Medical Center  Hershey 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