a retrospective clinicopathologic study of 34 patients with optic nerve glioma disclosed two important architectural tumor forms : circumferential-perineural pattern featuring tumor eruption and proliferation in the subarachnoid space correlating with the presence of neurofibromatosis , and an expansile-intraneural pattern correlating with the absence of neurofibromatosis .
C0346326
optic nerve glioma
C0027831
neurofibromatosis