The classic features of Marinesco-Sjogren syndrome include bilateral c
ataracts, cerebellar ataxia, and mental deficiency,with an autosomal r
ecessive inheritance pattern, Weakness and a variety of other characte
ristics are present inconsistently, A limited number of neuroimaging s
tudies have indicated that cerebellar hypoplasia is the most common fi
nding, We report a patient with near normal intelligence, unilateral c
ataract, and the previously unreported magnetic resonance imaging find
ings of cerebellar dysplasia, arachnoid cyst, and absent septum pelluc
idum. A review of the literature suggests significant heterogeneity in
the Marinesco-Sjogren syndrome.