title: Primary rhabdoid tumor with low grade glioma component of the central nervous system in a young adult.
abstract: In the CNS, primary tumors with rhabdoid components are classified as atypical teratoid/rhabdoid tumor, rhabdoid meningioma or rhabdoid glioblastoma. The authors present a young adult patient with supratentorial rhabdoid tumor incidentally found after head trauma as a small pre-existing lesion in the parahippocampal gyrus. MRI demonstrated an area of hypointensity on T1-weighted images and hyperintensity on T2-weighted and fluid attenuated inversion recovery images. A serial MR scan revealed no change 3 months after the initial examination but drastic changes at 6 months. As the tumor and accompanying intratumoral hemorrhage enlarged rapidly, resection of the tumor was performed. Histopathology revealed that the main component of the tumor was typical rhabdoid cells with some necrotic areas. There were also pathological features consistent with oligoastrocytoma. The specimen had neither vascular proliferation usually seen in high-grade glioma nor the meningothelial pattern that suggests meningioma. Immunohistochemical findings revealed that cells were strongly positive for vimentin, epithelial membrane antigen and INI-1 antibody throughout the specimen. Further, monosomy 22 was detected by fluorescence in situ hybridization. The tumor was finally thought to be an unclassifiable primitive rhabdoid tumor with oligoastrocytoma that arose in the CNS. The patient died within 5 months of detection of the tumor, regardless of surgical resection, radiotherapy and chemotherapy.
authors: Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
authors: Shogo
authors: S
authors: Endo
authors: Shunsuke
authors: S
authors: Terasaka
authors: Shigeru
authors: S
authors: Yamaguchi
authors: Hitoshi
authors: H
authors: Ikeda
authors: Tsutomu
authors: T
authors: Kato
authors: Hiroyuki
authors: H
authors: Kobayashi
authors: Shinya
authors: S
authors: Tanaka
authors: Kiyohiro
authors: K
authors: Houkin
mesh_terms: D017809:Fatal Outcome; D005910:Glioma / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D008297:Male; D018335:Rhabdoid Tumor / Q000175:diagnosis* / Q000628:therapy; D015173:Supratentorial Neoplasms / Q000175:diagnosis* / Q000628:therapy; D055815:Young Adult