_:vb50954960 "A malignant astrocytoma that is characterized as a low grade astrocytoma and has_material_basis_in neoplastic astrocytes."^^ . _:vb50954960 . _:vb50954960 . _:vb50954960 . _:vb50954960 . _:vb50954960 . _:vb50954960 . _:vb50954960 "url:http://en.wikipedia.org/wiki/Fibrillary_astrocytoma"^^ . _:vb50954960 . _:vb50954960 "url:http://www.braintumour.ca/4877/diffuse-astrocytoma-/-fibrillary-astrocytoma"^^ . _:vb50954960 "url:http://www.cancer.gov/dictionary?CdrID=45602"^^ .