title: Dorsally sequestrated thoracic disc herniation--case report.
abstract: A 53-year-old male presented with a rare dorsally sequestrated thoracic disc herniation manifesting as acute low back pain and weakness. He had no history of trauma. Magnetic resonance (MR) imaging demonstrated a mass at T10-11 intervertebral level connected with the T-10 disc. Axial MR imaging showed the mass had surrounded and compressed the dural sac from the lateral and dorsal sites. MR imaging with gadolinium-diethylenetriaminepenta-acetic acid showed slight rim enhancement of the lesion. Computed tomography detected no abnormal calcification. The diagnosis was thoracic disc herniation. Laminectomy resulted in rapid and satisfactory recovery. The histological diagnosis was thoracic disc herniation. MR imaging was very effective for the diagnosis based on the connection between the mass and the disc space. The differential diagnosis includes metastatic epidural tumor, epidural hematoma, and epidural abscess.
authors.affiliation: Department of Neurosurgery, Shizuoka General Hospital, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Morizane
authors.forename: J
authors.initials: J
authors.lastname: Hanakita
authors.forename: H
authors.initials: H
authors.lastname: Suwa
authors.forename: N
authors.initials: N
authors.lastname: Ohshita
authors.forename: K
authors.initials: K
authors.lastname: Gotoh
authors.forename: T
authors.initials: T
authors.lastname: Matsuoka
mesh_terms: D000208:Acute Disease; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D007796:Laminectomy / Q000379:methods*; D017116:Low Back Pain / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008875:Middle Aged; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome