title: Extramedullary thoracic myxopapillary ependymoma--a case report of a rare tumour.
abstract: We report a case of thoracic exophytic myxopapillary ependymoma with imaging modality mimicking an intradural extramedullary tumour. This tumour showed hypointense relative to the spinal cord on T1-weighted (TR516/TE17) images and hyperintense on T2-weighted (TR4000/TE84) images. It revealed strong enhancement on T1-weighted (TR500/TE11) images. These findings were diagnosed as a meningioma by the radiologist. The tumour was proven to arise from the ventral side of the thoracic cord, and was totally excised. It was verified histopathologically as a myxopapillary ependymoma.
authors.affiliation: Department of Neurosurgery, Chang-Gung Memorial Hospital, Kaohsiung Hsien, Taiwan, ROC.
authors.forename: C H
authors.initials: CH
authors.lastname: Cheng
authors.forename: T C
authors.initials: TC
authors.lastname: Lee
authors.forename: H Y
authors.initials: HY
authors.lastname: Huang
authors.forename: C C
authors.initials: CC
authors.lastname: Lui
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D005910:Glioma / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D007796:Laminectomy; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D013120:Spinal Cord Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology / Q000601:surgery