title: Intradural retroclival chordoma without bone involvement - case report.
abstract: A 63-year-old, previously healthy man presented with a rare large intradural retroclival chordoma without bone involvement. Computed tomography showed that the tumor was completely intradural and did not involve the bone, as confirmed at intraoperative inspection. The tumor was totally excised via the anterior transpetrosal approach. Surgery is the most effective first-line treatment for patients with chordoma despite the typical extradural extension and bone destruction. Complete resection is feasible for intradural extraosseous chordoma because of the sharply circumscribed margins and absence of bone involvement. Specialized skull base techniques should be used instead of conventional surgical approaches for intradural skull base chordoma.
authors.affiliation: Department of Neurosurgery, Osaka General Medical Center, Osaka, Japan. katsuyam@gh.pref.osaka.jp
authors.forename: Katsuya
authors.initials: K
authors.lastname: Masui
authors.forename: Shozo
authors.initials: S
authors.lastname: Kawai
authors.forename: Taiji
authors.initials: T
authors.lastname: Yonezawa
authors.forename: Kenta
authors.initials: K
authors.lastname: Fujimoto
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Nishi
mesh_terms: D002817:Chordoma / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery*; D003388:Cranial Fossa, Posterior / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D003389:Cranial Nerve Diseases / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D003399:Craniotomy / Q000379:methods; D004172:Diplopia / Q000209:etiology / Q000503:physiopathology; D004401:Dysarthria / Q000209:etiology / Q000503:physiopathology; D020233:Gait Disorders, Neurologic / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D015192:Infratentorial Neoplasms / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery*; D008875:Middle Aged; D009361:Neoplasm Invasiveness / Q000503:physiopathology / Q000517:prevention & control; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome