"GFAP: positive, although often only weakly"
"Ki-67 proliferation index:"
"Pleomorphic xanthoastrocytomas, as well as pilocytic astrocytomas (and many non-CNS tumours), exhibit BRAF mutations 6,7, often the BRAF V600E point mutation. Coexisting CDKN2A (a tumour suppressor gene) deletion makes it prone to transforming into high-grade glioma 10."
Expected headings
"Grading"
"neuronal markers including synaptophysin, MAP2 and neurofilament: variable"