An unusual case of varicella zoster encephalitis mimicking a glioblastoma on magnetic resonance imaging and magnetic resonance spectroscopy.

The authors report a case of varicella zoster encephalitis, mimicking a glioblastoma on Magnetic Resonance Imaging (MRI) and Magnetic Resonance Spectroscopy (MRS). The limitations of MRI/MRS, may lead to delayed treatment with antiviral agents, which can result in increased morbidity and mortality. The possibility of viral encephalitis should remain in the differential diagnosis of all patients presenting with headaches and confusion, even when imaging results are indicative of a neoplastic process.