[Thalamic lesion in tick-borne encephalitis].

Signal enhancement on T2-weighted images of the thalamus on one or both sides by magnetic resonance imaging (MRI) is among the most frequently observed neuroradiological findings in patients with acute tick-borne encephalitis. The article presents a clinical case of a patient who had an encephalo-polyoencephalomyelitic form of tick-borne encephalitis with MRI picture of a typical bilateral thalamic lesion. Such changes according to neuroimaging studies may have a clinical differential-diagnostic value, and the knowledge of these features by neuroradiologists and neurologists will contribute to the correct diagnosis of acute tick-borne encephalitis, especially most severe forms.