Diffusion-Weighted Imaging Findings in a Case of Malignant Optic Glioma

Anterior visual pathway malignant gliomas are rare, often simulate optic neuritis clinically and radiographically, and progress to blindness and death within a year. We report a patient with a typical presentation, in whom biopsy was deferred because the diagnosis was thought to be Tolosa-Hunt syndrome (THS). The DWI findings in this case have not previously been reported, to the best of our knowledge, and highlight the cytotoxic edema/infarction often seen in this condition.