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Palisades and tumors
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Lung metastatic tumor in brain
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A meningioma at a parasagittal location
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Benign meningioma growing underneath the dura
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Note compression caused by meningioma in the underlying cerebral hemisphere
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Meningioma compressing the pituitary
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Giantism can result from pituitary tumors in childhood
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Benign ependymoma; note inaccessible site
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Cystic astrocytoma of childhood
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Glioma with mass effect
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Low grade gliomas still have poor prognosis if present in a difficult to remove location
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Large brain stem glioma
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Cerebral hemisphere glioma; note absence of clear margin
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Astrocytoma at low magnification; normal tissue at right
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Glioblastoma multiforme
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GBM: note necrosis, hemorrhage
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Note palisading effect around necrotic region
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Two models for the formation of pseudo-palisades in GBM
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Palisading cells surrounding necrosis are typical of GBM
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Model for formation of palisades
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