Pilocytic astrocytoma
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| Pilocytic astrocytoma Classification and external resources |
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| ICD-10 | C71. |
|---|---|
| ICD-9 | 191 |
| ICD-O: | M9421/1 |
| eMedicine | radio/367 |
| MeSH | D001254 |
Pilocytic astrocytoma, or juvenile pilocytic astrocytoma, is a brain tumor that occurs predominantly in children and involves the midline, basal, and posterior fossa structures. It is, in general, considered a benign tumor of childhood. It is often cystic, and, if solid, it tends to be well-circumscribed. It is characteristically a contrast-enhancing tumour by current imaging investigations (e.g., CT scan, MRI)
Under the microscope, the tumor is viewed to be composed of bipolar cells with long "hairlike" GFAP-positive processes. Rosenthal fibers, eosinophilic granular bodies, and microcysts are often present.
It is classified as Grade 1 Astrocytoma.
[edit] External links
- Medical Image Database
- UC
- fightJPA - An Organization Dedicated to Funding Research into Juvenile Pilocytic Astrocytoma
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