{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T12:15:57Z","timestamp":1788869757446,"version":"build-2803163510"},"reference-count":35,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","license":[{"start":{"date-parts":[[2019,12,6]],"date-time":"2019-12-06T00:00:00Z","timestamp":1575590400000},"content-version":"vor","delay-in-days":706,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Operative Surg.","ONSURG"],"published-print":{"date-parts":[[2018,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>Anterior inferior cerebellar artery (AICA) aneurysms are rare lesions whose treatment can involve microsurgical and\/or endovascular techniques. Such treatment can be challenging and may carry a significant risk of neurological morbidity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBJECTIVE<\/jats:title>\n                    <jats:p>To demonstrate a case involving a complex AICA aneurysm that was treated with a unique microsurgical approach involving trapping the aneurysm and performing in Situ bypass from the posterior inferior cerebellar artery (PICA) to the distal AICA. The nuances of AICA aneurysms and revascularization strategies are discussed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS<\/jats:title>\n                    <jats:p>The aneurysm and the distal segments of AICA and PICA were exposed with a retrosigmoid and far lateral approach. A side-to-side anastomosis was performed between the adjacent caudal loops of PICA and AICA. The AICA aneurysm was then treated by trapping the aneurysm-bearing segment of the parent vessel between 2 clips.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>A postoperative angiogram demonstrated a patent PICA-AICA bypass and complete occlusion of the AICA aneurysm. There were no complications, and the patient made an excellent recovery.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION<\/jats:title>\n                    <jats:p>The combination of parent vessel sacrifice and bypass remains an excellent option for certain difficult-to-treat aneurysms. This case involving PICA-AICA bypass to treat an AICA aneurysm serves as an example of the neurosurgeon's ability to develop unique solutions that take advantage of individual anatomy.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ons\/opx275","type":"journal-article","created":{"date-parts":[[2017,12,30]],"date-time":"2017-12-30T04:55:29Z","timestamp":1514609729000},"page":"418-424","source":"Crossref","is-referenced-by-count":16,"title":["Treatment of an Anterior Inferior Cerebellar Artery Aneurysm With Microsurgical Trapping and In Situ Posterior Inferior Cerebellar Artery to Anterior Inferior Cerebellar Artery Bypass: Case Report"],"prefix":"10.1227","volume":"15","author":[{"given":"Bryan S","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio"},{"name":"Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex M","family":"Witek","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio"},{"name":"Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nina Z","family":"Moore","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio"},{"name":"Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark D","family":"Bain","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio"},{"name":"Cerebrovascular Center, Cleveland Clinic, Cleveland, Ohio"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2018,10]]},"reference":[{"issue":"5","key":"bib1-20231017","doi-asserted-by":"crossref","first-page":"1036","DOI":"10.1227\/01.NEU.0000140822.64362.C6","article-title":"Bypass grafting and revascularization in the management of posterior circulation aneurysms","volume":"55","author":"Evans","year":"2004","journal-title":"Neurosurgery"},{"issue":"4","key":"bib2-20231017","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1007\/s10143-012-0390-5","article-title":"Clinical presentation and treatment of distal anterior inferior cerebellar artery aneurysms","volume":"35","author":"Tokimura","year":"2012","journal-title":"Neurosurg Rev"},{"issue":"1","key":"bib3-20231017","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1007\/s10143-011-0338-1","article-title":"Anterior inferior cerebellar artery aneurysms: six cases and a review of the literature","volume":"35","author":"Li","year":"2012","journal-title":"Neurosurg Rev"},{"issue":"5","key":"bib4-20231017","doi-asserted-by":"crossref","first-page":"1025","DOI":"10.1227\/01.NEU.0000141083.00866.82","article-title":"Anteroinferior cerebellar artery aneurysms: surgical approaches and outcomes\u2014a review of 34 cases","volume":"55","author":"Gonzalez","year":"2004","journal-title":"Neurosurgery"},{"issue":"1-2","key":"bib5-20231017","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1016\/j.wneu.2012.09.010","article-title":"Distal aneurysms of intracranial arteries: application of numerical nomenclature, predilection for cerebellar arteries, and results of surgical management","volume":"80","author":"Rodr\u00edguez-Hern\u00e1ndez","year":"2013","journal-title":"World Neurosurg"},{"issue":"6","key":"bib6-20231017","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1177\/1591019916656474","article-title":"Anterior inferior cerebellar artery aneurysms: segments and results of surgical and endovascular managements","volume":"22","author":"Lv","year":"2016","journal-title":"Interv Neuroradiol"},{"issue":"suppl_3","key":"bib7-20231017","first-page":"S29","article-title":"The cerebellar arteries","volume":"47","author":"Rhoton","year":"2000","journal-title":"Neurosurgery"},{"issue":"2","key":"bib8-20231017","doi-asserted-by":"crossref","first-page":"387","DOI":"10.3171\/2011.3.JNS101413","article-title":"Segmental anatomy of cerebellar arteries: a proposed nomenclature","volume":"115","author":"Rodr\u00edguez-Hern\u00e1ndez","year":"2011","journal-title":"J Neurosurg"},{"issue":"5","key":"bib9-20231017","doi-asserted-by":"crossref","first-page":"509","DOI":"10.1016\/S0090-3019(97)00462-X","article-title":"Embolization of a ruptured aneurysm of the distal anterior inferior cerebellar artery: case report and review of the literature","volume":"51","author":"Suzuki","year":"1999","journal-title":"Surg Neurol"},{"issue":"4","key":"bib10-20231017","doi-asserted-by":"crossref","first-page":"504","DOI":"10.3171\/jns.1980.52.4.0504","article-title":"Microsurgical anatomy of the choroidal arteries. 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