Fig. 5From: Imaging in Lyme neuroborreliosisLNB meningoencephalitis in a 45-year-old female who presented with fatigue, headache, dizziness and vomiting. Neurological findings were tremor and unsteady gait. The CSF cell count was 270 cells/mm3 and there was a positive Bb IgG AI. Post-contrast sagittal (a) and axial (b) FLAIR images demonstrated patchy leptomeningeal enhancement over the cerebral convexities and in the posterior fossa (arrows). There was a hyperintense lesion in the left thalamus (arrow) on axial T2-weighted image (c) and coronal FLAIR image (d). There was no abnormality in the lesion on diffusion weighted images (not shown). Post-contrast axial (e) and coronal (f) T1-weighted images showed punctate and curvilinear uptake (arrows) in the thalamic lesion. Similar, subtle changes were present in the right thalamus. After 2Â months there was only slight residual hyperintensity in the left thalamus (arrow) on axial FLAIR image (g) and no sign of enhancement on post-contrast axial T1 weighted image (h). One year after treatment there were no imaging abnormalities (i)Back to article page