- Intracranial Extracerebral Glioneuronal Heterotopia with Adipose Tissue and a Glioependymal Cyst: A Case Report and Review of the Literature
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Hwa Jin Cho, Han Na Kim, Kyung Ju Kim, Kyu Sang Lee, Jae Kyung Myung, Seung-Ki Kim, Sung-Hye Park
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Korean J Pathol. 2014;48(3):254-257. Published online June 26, 2014
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DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.3.254
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- Immunohistochemical Classification of Primary and Secondary Glioblastomas
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Kyu Sang Lee, Gheeyoung Choe, Kyung Han Nam, An Na Seo, Sumi Yun, Kyung Ju Kim, Hwa Jin Cho, Sung Hye Park
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Korean J Pathol. 2013;47(6):541-548. Published online December 24, 2013
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DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.6.541
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Abstract
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- Background
Glioblastomas may develop de novo (primary glioblastomas, P-GBLs) or through progression from lower-grade astrocytomas (secondary glioblastomas, S-GBLs). The aim of this study was to compare the immunohistochemical classification of glioblastomas with clinically determined P-GBLs and S-GBLs to identify the best combination of antibodies for immunohistochemical classification. MethodsWe evaluated the immunohistochemical expression of epidermal growth factor receptor (EGFR), p53, and isocitrate dehydrogenase 1 (IDH-1) in 150 glioblastoma cases. ResultsAccording to clinical history, the glioblastomas analyzed in this study consisted of 146 P-GBLs and 4 S-GBLs. Immunohistochemical expression of EGFR, p53, and IDH-1 was observed in 62.6%, 49.3%, and 11.1%, respectively. Immunohistochemical profiles of EGFR(+)/p53(-), IDH-1(-)/EGFR(+)/p53(-), and EGFR(-)/p53(+) were noted in 41.3%, 40.2%, and 28.7%, respectively. Expression of IDH-1 and EGFR(-)/p53(+) was positively correlated with young age. The typical immunohistochemical features of S-GBLs comprised IDH-1(+)/EGFR(-)/p53(+), and were noted in 3.6% of clinically P-GBLs. The combination of IDH-1(-) or EGFR(+) was the best set of immunohistochemical stains for identifying P-GBLs, whereas the combination of IDH-1(+) and EGFR(-) was best for identifying S-GBLs. ConclusionsWe recommend a combination of IDH-1 and EGFR for immunohistochemical classification of glioblastomas. We expect our results to be useful for determining treatment strategies for glioblastoma patients.
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