{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T18:04:11Z","timestamp":1786125851373,"version":"build-2736575974"},"reference-count":6,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"6","license":[{"start":{"date-parts":[[2021,9,11]],"date-time":"2021-09-11T00:00:00Z","timestamp":1631318400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":["Operative Surg.","ONSURG"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Petrous meningiomas are defined as tumors with a basal dural attachment on the posterior surface of the petrous bone.\n                    <jats:sup>1<\/jats:sup>\n                    Their insertion can be anterior to the meatus (petrous apex meningiomas), or posterior to the meatus, with associated hyperostotic bony invasion either pre- or retro-meatal.\n                    <jats:sup>2<\/jats:sup>\n                    These meningiomas are amenable to curative surgical removal and have better surgical outcomes than more medially located true petroclival meningiomas that originate medial to the fifth nerve.\n                    <jats:sup>2-4<\/jats:sup>\n                    They, however, remain challenging because of their close relationship to critical neurovascular structures in the cerebellopontine angle.\n                    <jats:sup>5<\/jats:sup>\n                    The posterior petrous meningiomas might reach a significant size with compression of the cerebellum, the brainstem, and involvement of the cranial nerves, and extend posteriorly to the transverse sigmoid sinus.\n                    <jats:sup>2,6<\/jats:sup>\n                  <\/jats:p>\n                  <jats:p>\n                    \u2003Transmastoid approach with skeletonization and lateral reflection of the transverse sigmoid sinus provides a superb exposure without cerebellar retraction.\n                    <jats:sup>6,7<\/jats:sup>\n                    The ease and complete resection of the tumor and invaded bone can be facilitated by combined microscopic-endoscopic techniques. We demonstrate these principles through the resection of a petrosal meningioma in a 56-yr-patient who presented with headaches, nystagmus, and mild cerebellar signs. The patient consented to the procedure.\n                  <\/jats:p>\n                  <jats:p>\n                    \u2003Image at 1:36 reprinted with permission from Al-Mefty O,\n                    <jats:italic toggle=\"yes\">Operative Atlas of Meningiomas.<\/jats:italic>\n                    Vol 1, \u00a9LWW, 1998.\n                  <\/jats:p>","DOI":"10.1093\/ons\/opab340","type":"journal-article","created":{"date-parts":[[2021,9,12]],"date-time":"2021-09-12T03:01:06Z","timestamp":1631415666000},"page":"E528-E529","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":2,"title":["Combined Microscopic-Endoscopic Transmastoid Resection of a Petrous Meningioma: 2-Dimensional Operative Video"],"prefix":"10.1227","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4640-0563","authenticated-orcid":false,"given":"Walid","family":"Ibn Essayed","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Brigham and Women's Hospital, Harvard School of Medicine, Boston, Massachusetts, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emad","family":"Aboud","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Arkansas Neuroscience Institute, Little Rock, Arkansas, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ossama","family":"Al-Mefty","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Brigham and Women's Hospital, Harvard School of Medicine, Boston, Massachusetts, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2021,12]]},"reference":[{"key":"bib1-20250821","first-page":"1","article-title":"Meningiomas of the posterior fossa","volume":"104","author":"Castellano","year":"1953","journal-title":"Acta Radiol Suppl"},{"key":"bib3-20250821","first-page":"150","article-title":"The road less traveled: transtemporal access to the CPA","volume":"41","author":"Haddad","year":"1994","journal-title":"Clin Neurosurg"},{"issue":"3","key":"bib4-20250821","doi-asserted-by":"crossref","first-page":"227","DOI":"10.3171\/jns.1950.7.3.0227","article-title":"Meningiomas of the cerebellar fossa","volume":"7","author":"D\u2019Errico","year":"1950","journal-title":"J Neurosurg"},{"issue":"2","key":"bib5-20250821","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3171\/foc.2005.19.2.8","article-title":"Surgical management of petroclival meningiomas: factors determining the choice of approach","volume":"19","author":"Erkmen","year":"2005","journal-title":"Neurosurg Focus"},{"issue":"1 Suppl Operative","key":"bib6-20250821","first-page":"ons16","article-title":"Transmastoid retrosigmoid approach to the cerebellopontine angle: surgical technique","volume":"73","author":"Abolfotoh","year":"2013","journal-title":"Neurosurgery"},{"issue":"5","key":"bib7-20250821","doi-asserted-by":"crossref","first-page":"1301","DOI":"10.3171\/2014.10.JNS141465","article-title":"The combined microscopic-endoscopic technique for radical resection of cerebellopontine angle tumors","volume":"123","author":"Abolfotoh","year":"2015","journal-title":"J Neurosurg"}],"container-title":["Operative Neurosurgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/ons\/article-pdf\/21\/6\/E528\/41121290\/opab340.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/www.ovid.com\/10.1093\/ons\/opab340","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:03:24Z","timestamp":1786122204000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.1093\/ons\/opab340"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9,11]]},"references-count":6,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2021]]}},"URL":"https:\/\/doi.org\/10.1093\/ons\/opab340","relation":{},"ISSN":["2332-4252","2332-4260"],"issn-type":[{"value":"2332-4252","type":"print"},{"value":"2332-4260","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,9,11]]},"assertion":[{"value":"2021-04-20","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-07-06","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}