title: Mesial temporal dysembryoplastic neuroepithelial tumor mimicking oligodendroglioma: a case report and review of the literature.
abstract: Dysembryoplastic neuroepithelial tumor (DNT) is an uncommon congenital tumor occurring in children. We report a 12-year-old boy who had a focal motor seizure involving his left face 6 months prior to admission. Preoperative computed tomography of the brain demonstrated a focal calcified tumor measuring 2.5 cm in diameter in the right temporal lobe. Initial pathological diagnosis was oligodendroglioma, and postoperative radiotherapy with a total dose of 5000 cGy in 28 fractions over 5&1/2 weeks was given. At follow-up 8 months later, neither clinical nor radiological recurrence was found. Because of the benign clinical course, a review of the surgical specimen was made, which led to the diagnosis of DNT. It is important to distinguish DNT from other tumors that have a worse prognosis. Correct diagnosis may prevent unnecessary radiotherapy or chemotherapy. The pathologic and radiologic diagnostic criteria of DNT are discussed, with a review of the literature.
authors.affiliation: Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.
authors.forename: B C
authors.initials: BC
authors.lastname: Chang
authors.forename: C Y
authors.initials: CY
authors.lastname: Chen
authors.forename: Y H
authors.initials: YH
authors.lastname: Wei
authors.forename: M Y
authors.initials: MY
authors.lastname: Liu
authors.forename: J H
authors.initials: JH
authors.lastname: Chiang
authors.forename: W H
authors.initials: WH
authors.lastname: Lee
mesh_terms: D001932:Brain Neoplasms / Q000473:pathology*; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D018302:Neoplasms, Neuroepithelial / Q000473:pathology*; D009837:Oligodendroglioma / Q000473:pathology*