title: Radiation-induced osteochondroma of the T4 vertebra causing spinal cord compression.
abstract: A case of a radiation-induced osteochondroma arising from the vertebral body of T4 in an 18-year-old man is reported. The patient presented with a history of progressive left lower extremity weakness. At 7 years of age, he had undergone resection of a cerebellar medulloblastoma and received adjunctive craniospinal irradiation and systemic chemotherapy. Both CT and MR imaging revealed an extradural mass contiguous with the posteroinferior endplate of the T4 vertebral body. This case indicates that radiation-induced osteochondroma should be considered in the differential diagnosis of patients with symptoms of myelopathy or nerve root compression and a history of radiation therapy involving the spine in childhood.
authors.affiliation: Department of Radiology, La Paz University Hospital, Po de la Castellana 261, 28046 Madrid, Spain. lgorospes@nexo.es
authors.forename: Luis
authors.initials: L
authors.lastname: Gorospe
authors.forename: Carmen
authors.initials: C
authors.lastname: Madrid-Muñiz
authors.forename: Aránzazu
authors.initials: A
authors.lastname: Royo
authors.forename: Pilar
authors.initials: P
authors.lastname: García-Raya
authors.forename: Fernando
authors.initials: F
authors.lastname: Alvarez-Ruiz
authors.forename: Fernando
authors.initials: F
authors.lastname: López-Barea
mesh_terms: D000328:Adult; D002528:Cerebellar Neoplasms / Q000628:therapy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008527:Medulloblastoma / Q000628:therapy; D009381:Neoplasms, Radiation-Induced / Q000150:complications* / Q000175:diagnosis; D015831:Osteochondroma / Q000150:complications* / Q000175:diagnosis / Q000209:etiology*; D013117:Spinal Cord Compression / Q000175:diagnosis / Q000209:etiology*; D013125:Spinal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000209:etiology*; D013904:Thoracic Vertebrae; D014057:Tomography, X-Ray Computed