MRI - MRI Brain
Innumerable, irregular, peripherally contrast enhancing lesions are seen in the supra and infratentorial brain, of varying sizes. These are mostly distributed in the basal ganglia and at the grey-white matter junction. The largest are located in the parietal lobes, measuring up to 4.5 cm on the right and 2.7 cm on the left. Several of lesions have a mural nodule e.g. in the right basal ganglia, and the left frontal lobe lesion has a target-like pattern of enhancement. No convincing central diffusion restriction. Many are however T2 hypointense centrally, with foci of susceptibility. Extensive surrounding vasogenic oedema. No definite leptomeningeal or pachymeningeal thickening/hyperenhancement.
No ventricular enlargement or ependymal enhancement to suggest ventriculitis. No subfalcine, uncal or tonsillar herniation. Paranasal sinuses are unremarkable.