Presentation
Muscle rigidity and convulsions.
Patient Data







Bilateral symmetrical confluent periventricular deep white matter high signal intensities on T2, involving the centrum semiovale with sparing of subcortical U fibres, and associated linear abnormal low signal intensities of the white matter on axial T2 consistent with a tigroid pattern.
Case Discussion
Metachromatic leukodystrophy is the most prevalent hereditary (autosomal recessive) leukodystrophy. It is characterised by peri-atrial and, to a lesser extent, frontal horn symmetrical deep white matter high signal intensities with sparing of subcortical U fibres. Perivenular sparing produces a tigroid pattern.