title: Atlas hypoplasia associated with non-traumatic retro-odontoid mass.
abstract: A 38-year-old man presented with progressive cervical myelopathy due to atlas hypoplasia associated with non-traumatic retro-odontoid mass. The neuroimaging findings suggested hypertrophy of the transverse ligament of the atlas. No histological confirmation of the retro-odontoid mass was obtained. Clinical manifestations improved after posterior decompression. Decompressive laminectomy of the atlas with or without fusion can achieve a good outcome in such cases.
authors.affiliation: Division of Neurosurgery, Department of Sensory & Locomotor Medicine, Faculty of Medical Science, University of Fukui, Japan. ksato@fmsrsa.fukui-med.ac.jp
authors.forename: Kazufumi
authors.initials: K
authors.lastname: Sato
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Kubota
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Takeuchi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Handa
mesh_terms: D000328:Adult; D001270:Cervical Atlas / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D019299:Decompression, Surgical; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D007796:Laminectomy; D008279:Magnetic Resonance Imaging; D008297:Male; D009809:Odontoid Process / Q000473:pathology / Q000601:surgery; D013117:Spinal Cord Compression / Q000175:diagnosis / Q000601:surgery*; D013130:Spinal Stenosis / Q000175:diagnosis / Q000601:surgery*; D013680:Tectorial Membrane / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed