title: Invasive dumbbell spinal meningiomas: report of four cases and a review of the literature.
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
authors.forename: Akio
authors.initials: A
authors.lastname: Iwanami
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
authors.forename: Yoshiomi
authors.initials: Y
authors.lastname: Kobayashi
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
authors.forename: Morito
authors.initials: M
authors.lastname: Takano
authors.affiliation: Department of Pathology, School of Medicine, Keio University, Shinanomachi 35, Shinjuku-ku, Tokyo, 160-8582, Japan.
authors.forename: Shuji
authors.initials: S
authors.lastname: Mikami
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Toyama
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan. masa@a8.keio.jp.
authors.forename: Masaya
authors.initials: M
authors.lastname: Nakamura
mesh_terms: D000328:Adult; D000368:Aged; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008579:Meningioma / Q000175:diagnosis* / Q000601:surgery*; D008875:Middle Aged; D009192:Myelography / Q000379:methods; D009361:Neoplasm Invasiveness / Q000473:pathology; D009367:Neoplasm Staging; D019635:Neurosurgical Procedures / Q000379:methods; D011856:Radiographic Image Enhancement; D018570:Risk Assessment; D012494:Sampling Studies; D013120:Spinal Cord Neoplasms / Q000175:diagnosis* / Q000601:surgery*; D015996:Survival Rate; D016896:Treatment Outcome