title: Meningioma arising from the trigeminal nerve: a case report and literature review.
abstract: We report a 69-year-old woman with a meningioma who presented with a 9-month history of progressive facial numbness in the distribution of the left mandibular nerve and left facial palsy. Magnetic resonance imaging revealed a mass in and around the left Meckel's cave (MC). The tumor was totally resected through a lateral suboccipital and subtemporal combined approach. It appeared to be a schwannoma, because it adhered firmly to the cisternal portion of the trigeminal nerve without dural attachment. Histopathological examination revealed that it was a meningothelial meningioma. We concluded that the tumor originated from the arachnoid cap cells within the trigeminal nerve sheath, not from the dura mater in the MC.
authors.affiliation: Department of Neurosurgery, Osaka University Medical School, Suita, Osaka, Japan. yfujimoto@nsurg.med.osaka-u.ac.jp
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Fujimoto
authors.forename: Amami
authors.initials: A
authors.lastname: Kato
authors.forename: Masaaki
authors.initials: M
authors.lastname: Taniguchi
authors.forename: Motohiko
authors.initials: M
authors.lastname: Maruno
authors.forename: Toshiki
authors.initials: T
authors.lastname: Yoshimine
mesh_terms: D000368:Aged; D003390:Cranial Nerve Neoplasms / Q000473:pathology* / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008579:Meningioma / Q000473:pathology* / Q000601:surgery*; D016896:Treatment Outcome; D014276:Trigeminal Nerve