The dissemination of parenchymal glial tumors into the leptomeninges has been recognized since the early twentieth century [8]. PDLG by contrast is a rare condition in which a glioma primarily involves the leptomeningeal space without obvious extension into the central nervous system parenchyma. The tumors likely arise from heterotopic nests of glial tissue in the subarachnoid space [9]. Patients with PDLG can present with a variety of clinical symptoms, but the most common presenting symptoms are due to raised intracranial pressure [10].