title: Chiari malformation with thick occipital bone.
abstract: A case of a Chiari malformation with an extraordinarily thick occipital bone is described. The thick occipital bone might make the posterior fossa narrow with consequent herniation of the cerebellar tonsils to the foramen magnum and formation of a syrinx. At dural plasty, well-developed marginal and occipital sinuses should be deliberately handled with the preservation of normal venous drainage. This case gives us the essence of the occurrence mechanisms of Chiari malformation and foramen magnum decompression.
authors.affiliation: Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan. tyasu37@cc.okayama-u.ac.jp
authors.forename: Takao
authors.initials: T
authors.lastname: Yasuhara
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Miyoshi
authors.forename: Isao
authors.initials: I
authors.lastname: Date
mesh_terms: D000328:Adult; D001139:Arnold-Chiari Malformation / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D004677:Encephalocele / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D005539:Foramen Magnum / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D009777:Occipital Bone / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed