Published in:
01-04-2014 | Original Article
Radiological features of supratentorial gliomas are associated with their genetic aberrations
Authors:
Yuya Nishiyama, Hikaru Sasaki, Shinya Nagahisa, Kazihide Adachi, Takuro Hayashi, Koichiro Yoshida, Tsukasa Kawase, Natsuki Hattori, Kazuhiro Murayama, Masato Abe, Mitsuhiro Hasegawa, Yuichi Hirose
Published in:
Neurosurgical Review
|
Issue 2/2014
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Excerpt
Gliomas are the most common primary neoplasms of the central nervous system [
1]. Histopathological examination of surgically resected tissue is essential for the diagnosis of gliomas, and it forms the basis on which decisions regarding the use of adjuvant therapies are taken. This methodology has several potential difficulties, however. These include the fact that even pathologically identical tumors may have a different prognosis, that occasionally different areas of the same tumor tissue can have different histological characteristics [
2], and that there is no entirely objective way of interpreting cellularity, anaplasia, or even cell type. To address these problems, many studies have tried to distinguish tumors on the basis of genetic and protein markers with the aim of standardizing decisions regarding therapeutic strategy based on the tumor subtypes they defined [
3,
4]. Of particular note are the allelic losses of chromosomes 1p and 19q (−1p/19q), which have been reported as being positive predictors of chemotherapeutic response for anaplastic oligodendroglial tumors [
5,
6]. Moreover, after Parsons et al. demonstrated that some gliomas carry a mutation in the
IDH1 gene, genetic investigations have become increasingly important in the study of glioma biology [
7]. However, although genetic analysis does provide important information, it requires an invasive surgical procedure. …