Adult alpha-mannosidosis: clinical progression in the absence of demyelination.

Gutschalk, A; Harting, I; Cantz, M; Springer, C; Rohrschneider, K; Meinck, H-M · Neurology · 2004

case_series · Level IV

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Abstract

Alpha-mannosidosis is an inherited lysosomal storage disease. The authors report three siblings (ages 38 to 47 years) with the rare adult variant. All three had late-onset ataxia and retinal degeneration, adding to hearing loss, cognitive impairment, and dysotosis multiplex. One sibling also had psychosis. MRI revealed cerebellar atrophy and predominantly parieto-occipital white matter changes. MR spectroscopy showed no evidence for demyelination. It appears that the disabling course of adult alpha-mannosidosis is caused by lysosomal accumulation rather than demyelination.

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