title: Periosteal chondroma with spinal cord compression in the thoracic spinal canal: a case report.
abstract: Periosteal chondroma is a very unusual cartilaginous neoplasm of the spinal canal. We herein report a case of periosteal chondroma in a 41-year-old male who presented with gait disturbance and paresthesia of both lower extremities. Magnetic resonance (MR) images showed an extradural mass which caused compression of the spinal cord at the T5/6 level. The mass showed iso-signal intensity on T1-weighted images, high signal intensity on T2-weighted images, and nodular and peripheral rim enhancement on post-contrast T1-weighted images. Computed tomography (CT) images showed a mass with punctate calcifications and extension into the left T5/6 neural foramen. MR and CT images showed extrinsic cortical bone erosion of the posterior inferior body of T5 and superior pedicle of T6, bone remodeling with overhanging margins, and sclerosis adjacent to the tumor. The patient underwent a complete excision of the mass by left T5/6 hemi-laminectomy and exhibited complete resolution of his symptoms. Histopathologic examination revealed periosteal chondroma. Tumor recurrence was not recorded during the 18-month follow-up period.
authors.affiliation: Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, Korea.
authors.forename: Dong Hyeok
authors.initials: DH
authors.lastname: Kang
authors.affiliation: Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, Korea. kangbs0708@hanmail.net.
authors.forename: Byeong Seong
authors.initials: BS
authors.lastname: Kang
authors.affiliation: Department of Neurosurgery, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea.
authors.forename: Hong Bo
authors.initials: HB
authors.lastname: Sim
authors.affiliation: Department of Pathology, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea.
authors.forename: Misung
authors.initials: M
authors.lastname: Kim
authors.affiliation: Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, Korea.
authors.forename: Woon Jung
authors.initials: WJ
authors.lastname: Kwon
mesh_terms: D000328:Adult; D002812:Chondroma / Q000000981:diagnostic imaging*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013115:Spinal Canal / Q000000981:diagnostic imaging / Q000503:physiopathology*; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014057:Tomography, X-Ray Computed
keywords: Chondroma; Magnetic resonance imaging; Periosteum; Spinal canal; Tomography, X-ray computed