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| ==Overview==
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| '''Pilocytic astrocytoma''' is a brain tumor that occurs predominantly in children and involves the midline, basal and posterior [[fossa]] structures. It is generally considered a [[benign]] tumor of childhood.
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| ==Pathophysiology==
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| ===Microscopic Pathology===
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| It is often [[cystic]] and if solid, it tends to be well circumscribed.
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| Microscopically, the tumor is composed of bipolar cells with long "hairlike" [[GFAP]]-positive processes. [[Rosenthal fiber]]s, [[eosinophilic]] granular bodies and microcysts are often present.
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| It is classified as '''Grade 1 [[Astrocytoma]]'''.
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| ==Diagnosis==
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| ===CT===
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| It is characteristically a contrast enhancing tumor by current imaging investigations (e.g. [[CT scan]], [[MRI]])
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| ==References==
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| {{reflist|2}}
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| {{WikiDoc Help Menu}}
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| {{WikiDoc Sources}}
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| [[Category:Disease]]
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| [[Category:Neurology]]
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| [[Category:Oncology]]
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| [[Category:Oncology]]
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