A Case of Dural Arteriovenous Fistula Mimicking a Cerebellar Tumor

A 49-year-old healthy male presented to his local hospital with intractable headache, nausea, and ataxia. Initial gadolinium-enhanced magnetic resonance imaging (MRI) of the brain revealed an enhancing cerebellar mass lesion with vasogenic edema (Figure 1). A computed tomography scan of the chest, abdomen, and pelvis was unremarkable. He underwent biopsy for a presumptive diagnosis of a cerebellar tumor. The pathology showed nonspecific reactive changes without inflammation or malignant cells. An extensive infectious and autoimmune serological workup was negative and the patient was placed on long-term steroids and his symptoms improved. Vascular imaging was not performed at this time