Results 21 to 30 of about 75,763 (246)
, 2016 Pilocytic astrocytoma (PA) is the most common pediatric brain tumor in children. PAs are a distinct histologic and biologic subset of glioma that have a slow growth rate and may even spontaneously regress. These tumors tend to arise in the cerebellum and chiasmatic/hypothalamic region, but can also occur in other regions of the central nervous system ...
Miriam, Bornhorst +2 more
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Journal of Biomedical Science, 2012 Background Astrocytomas are cancers of the brain in which high levels of extracellular glutamate plays a critical role in tumor growth and resistance to conventional treatments.
Varini Karine +6 more
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A rare, pediatric, fourth-ventricular, anaplastic astrocytoma
Radiology Case Reports, 2021 Anaplastic astrocytoma, a diffusely infiltrating, malignant, astrocytic, primary brain tumor, is most commonly observed between 30 and 50 years of age. Anaplastic astrocytomas are now classified as WHO grade III lesions, with imaging characteristics and ...
Dang Vinh Hiep, MD, PhD +2 more
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Scientific Reports, 2023 Astrocytoma is a common brain tumor that can occur in any part of the central nervous system. This tumor is extremely harmful to patients, and there are no clear studies on the risk factors for astrocytoma of the brain.
Ruiqi Wang +6 more
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BMC Cancer, 2004 Background Astrocytoma is a common aggressive intracranial tumor and presents a formidable challenge in the clinic. Association of altered DNA methylation patterns of the promoter CpG islands with the expression profile of cancer-related genes, has been ...
Wang Yifei +7 more
doaj +1 more source
Recurrent Optic Nerve Pilocytic Astrocytoma: A Rare Case [PDF]
Journal of Clinical and Diagnostic Research, 2017 Pilocytic astrocytoma is a low grade glioma that affects mostly children and young adults and can occur anywhere in the central nervous system. Pilocytic astrocytoma of the optic nerve is an equally indolent subtype that is often associated with ...
SUDHA GIRISH MENON +3 more
doaj +1 more source
Mitotic Index Thresholds Do Not Predict Clinical Outcome for IDH-Mutant Astrocytoma.
Journal of Neuropathology and Experimental Neurology, 2019 Current histological grading recommendations for isocitrate dehydrogenase (IDH)-mutant astrocytoma are imprecise and not reliably predictive of patient outcome, while somatic copy number alterations are emerging as important prognostic biomarkers.
Rebecca A Yoda +7 more
semanticscholar +1 more source
Transcriptome analysis reveals distinct gene expression profiles in astrocytoma grades II-IV
Biomedical Papers, 2017 Background: Astrocytoma is the most prevalent form of primary brain cancer categorized into four histological grades by the World Health Organization. Investigation into individual grades of astrocytoma by previous studies has provided some insight into ...
Nato Narsia +3 more
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Ependymal astrocytoma: subependyoma or subependymal glomerate astrocytoma [PDF]
Arquivos de Neuro-Psiquiatria, 1982 The histological study of four cases and one by electron microscopy of subependyomomas allowed us to obtain morphostructural characteristics of ependymocytes and astrocytes. Comparing these findings to those of the present day literature, we propose to name these tumours ependymal astrocytomas.
Duarte, Francisco +4 more
openaire +5 more sources
Total copy number variation as a prognostic factor in adult astrocytoma subtypes
Acta Neuropathologica Communications, 2019 Since the discovery that IDH1/2 mutations confer a significantly better prognosis in astrocytomas, much work has been done to identify other molecular signatures to help further stratify lower-grade astrocytomas and glioblastomas, with the goal of ...
K. Mirchia +10 more
semanticscholar +1 more source