title: Diffuse bilateral thalamic astrocytomas as examined serially by MRI.
abstract: We report the case of a 13-year-old girl with diffuse bilateral thalamic astrocytomas. Incoordination was observed at the onset. Cranial computed tomography (CT) showed enlarged thalami, and magnetic resonance imaging (MRI) revealed these lesions to be symmetrically enlarged with high intensity on the T2-weighted image. Owing to these atypical findings in the neuroimaging studies, we had difficulty in making the correct diagnosis of a brain tumor. After the diagnosis of diffuse bilateral thalamic astrocytomas was obtained, we performed hyperfractionated radiotherapy followed by chemotherapy. Radiation therapy was effective for a while, but the girl's condition deteriorated again and she died 8 months after admission. Although diffuse bilateral thalamic astrocytomas are difficult to diagnose because they do not resemble most other neoplasms on neuroimaging studies, pediatricians should keep this entity in mind in order to arrive at a precise and prompt diagnosis.
authors.affiliation: Department of Pediatrics, Kyoto Prefectural University of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yoshida
authors.forename: S
authors.initials: S
authors.lastname: Fushiki
authors.forename: Y
authors.initials: Y
authors.lastname: Takeuchi
authors.forename: M
authors.initials: M
authors.lastname: Takanashi
authors.forename: T
authors.initials: T
authors.lastname: Imamura
authors.forename: T
authors.initials: T
authors.lastname: Shikata
authors.forename: A
authors.initials: A
authors.lastname: Morimoto
authors.forename: K
authors.initials: K
authors.lastname: Konishi
authors.forename: A
authors.initials: A
authors.lastname: Miyazaki
authors.forename: T
authors.initials: T
authors.lastname: Sawada
mesh_terms: D000293:Adolescent; D000971:Antineoplastic Combined Chemotherapy Protocols; D001254:Astrocytoma / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology* / Q000532:radiotherapy; D002551:Cerebral Ventricle Neoplasms / Q000473:pathology*; D002648:Child; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D013788:Thalamus / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D017287:Ventriculoperitoneal Shunt