title: A topographic analysis of the proliferating tumor cells in an autopsied brain with infiltrative thalamic glioma.
abstract: Deep-seated gliomas, including thalamic gliomas, have a poor prognosis because of difficulty of accessibility for surgery. In addition, an infiltrative pattern of the tumor is related to a poor prognosis. In this study, the infiltrative/invasive profile of the proliferating tumor cells of a right thalamic glioma was evaluated in an autopsied brain. A 71-year-old man died from extensive infiltration of a right thalamic glioma. The distribution of the proliferating tumor cells at the right thalamic tumor level was represented by the topographic map of MIB-1 labeling indices (LI) on the whole-brain coronal slice, and this map was analyzed with pathological findings and postmortem T2-weighted magnetic resonance imaging (MRI). The highest MIB-1 LI was 24% for the whole autopsy brain at the thalamic tumor level, whereas the MIB-1 LI was 21% for the biopsy sample of the right thalamic glioma. Because this patient survived only 9 months after diagnosis of the tumor as anaplastic astrocytoma, it was confirmed that 21% MIB-1 LI of the biopsy sample was relevant to his prognosis. The topographic map of MIB-1 LI showed that the proliferating tumor cells of the right thalamic glioma invaded the ventricular walls and the contralateral thalamus by the periventricular route, but there was no exophytic extension to the cortex. In conclusion, topographic analysis of the proliferative potential detected by MIB-1 immunostaining provides information on the growth pattern of human glioma.
authors.affiliation: Department of Neurosurgery, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
authors.forename: M Ruhul
authors.initials: MR
authors.lastname: Amin
authors.forename: Hideki
authors.initials: H
authors.lastname: Kamitani
authors.forename: Takashi
authors.initials: T
authors.lastname: Watanabe
authors.forename: Minako
authors.initials: M
authors.lastname: Ishibashi
authors.forename: Toshihide
authors.initials: T
authors.lastname: Ogawa
authors.forename: Taisaku
authors.initials: T
authors.lastname: Funakoshi
authors.forename: Hajime
authors.initials: H
authors.lastname: Miyata
authors.forename: Eisaku
authors.initials: E
authors.lastname: Ohama
mesh_terms: D000368:Aged; D001931:Brain Mapping; D017809:Fatal Outcome; D005910:Glioma / Q000000981:diagnostic imaging* / Q000378:metabolism* / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000378:metabolism; D008279:Magnetic Resonance Imaging; D008297:Male; D011859:Radiography; D013787:Thalamic Nuclei / Q000000981:diagnostic imaging* / Q000378:metabolism* / Q000473:pathology
chemical_list: D019394:Ki-67 Antigen