MICROSCOPIC FINDINGS:
Fragments of a tumour of low cellularity with loose and compact areas. There are areas of microcystic change. The tumour cells have uniform of ovoid nuclei, inconspicuous nuclei and elongated eosinophilic cytoplasmic processes. Occasional Rosenthal fibres are present. Eosinophilic granular bodies are not identified. There are hyalinised blood vessels and a patchy mild chronic inflammatory cell infiltrate. There is focal infarct-like necrosis and glomeruloid microvascular proliferation. Increased cellularity or mitoses are not seen.
Features are consistent with a pilocytic astrocytoma.