title: Symptomatic osteochondroma of lumbosacral spine: report of 5 cases.
abstract: We describe 5 cases of osteochondroma (OC) originating from lumbosacral spine which caused radiculopathy. Four cases originated from the lumbar spine; all from L4 inferior articular process and presented L5 radiculopathy, the other one case originated from the sacrum; the case from S1 superior articular process presented L5 radiculopathy. In all cases, definitive diagnosis was made with histopathological findings; typical cartilaginous capping was confirmed. The functional recovery was completed in all 5 cases. As for imaging study, post myelography computed tomography revealed the most diagnostic tool for understanding the relationship between nerve tissue and the tumor. In all 5 patients, the tumors contained a high signal intensity on T2-weighted images in the central medullary area. OCs are sometimes difficult to diagnose because they mimic other conditions like bony spur formation due to osteoarthritis, so we should never fail to confirm the histopathological diagnosis of such lesions when suspected.
authors.affiliation: Spinal Disorders Center, Fujieda Heisei Memorial Hospital.
authors.forename: Keita
authors.initials: K
authors.lastname: Kuraishi
authors.forename: Junya
authors.initials: J
authors.lastname: Hanakita
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takahashi
authors.forename: Mizuki
authors.initials: M
authors.lastname: Watanabe
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Honda
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007796:Laminectomy / Q000379:methods; D008159:Lumbar Vertebrae / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D015831:Osteochondroma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D011843:Radiculopathy / Q000209:etiology*; D012074:Remission Induction; D012447:Sacrum / Q000473:pathology / Q000601:surgery; D013125:Spinal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D013128:Spinal Osteophytosis / Q000175:diagnosis; D014057:Tomography, X-Ray Computed