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However, if this is a diffuse astrocytoma, the tumor usually has already grown tiny microscopic tentacles that spread into the surrounding brain tissue. Those tentacles cannot always be seen by the neurosurgeon and intermingle with brain cells that are performing their normal important functions;
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This article focuses on the widely accepted WHO grading scheme that relies on assessments of nuclear atypia, mitotic activity, cellularity, vascular proliferation, and necrosis.2 WHO grade I corresponds to pilocytic astrocytoma, WHO grade II corresponds to low-grade (diffuse) astrocytoma, WHO grade III corresponds...
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Infiltrating "Diffuse" Astrocytomas: The authors discuss pathologic features of oligodendroglioma and astrocytoma with an emphasis on morphologic features & diagnostic markers that can assist in distinguishing them. ... Kleihues P, Davis RL, Ohgaki H, et al. Diffuse astrocytoma. In: Kleihues P, Cavenee WK, eds.
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Less than 10% of children with diffuse brainstem gliomas survive 2 years. Because the outcome for patients with either type of tumor is poor when standard multimodality therapy is used, these children are ideal candidates for innovative treatment approaches.
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Diffuse astrocytoma (grade II): A diffuse astrocytoma grows slowly, but often spreads into nearby tissues. Sometimes a diffuse astrocytoma progresses to a higher grade and becomes an anaplastic astrocytoma or a glioblastoma.
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25-year-old woman with low-grade astrocytoma in right thalamus and subsequent invasion of the left thalamus via the massa intermedia ... A 54-year-old patient with astrocytoma II of the right temporal lobe after surgery and stereotactic radiotherapy...
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Expert-reviewed information summary about the treatment of adult brain tumors. ... This World Health Organization grade II astrocytic tumor is less often curable than pilocytic astrocytoma. (Refer to the Diffuse Astrocytoma section in the Classification section of this summary for more information.)
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Diffuse astrocytoma WHO grade II is a well-differentiated, slowly growing tumor that has an inherent tendency to progress to anaplastic astrocytoma (WHO ...
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WHO grade I corresponds to pilocytic astrocytoma, WHO grade II corresponds to low-grade (diffuse) astrocytoma, WHO grade III corresponds to anaplastic astrocytoma, and WHO grade IV corresponds to glioblastoma multiforme (GBM). This article is confined to low-grade and anaplastic astrocytomas.
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Synonyms, Key Words, and Related Terms: astrocytoma, glioma, brain tumors, pilocytic astrocytoma, diffuse astrocytoma, anaplastic astrocytoma, glioblastoma multiforme, Li-Fraumeni syndrome, neurofibromatosis...
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