An identical abnormal pattern was detected by means of (99m)Tc-hexamethyl-propyleneamine-oxime single-photon emission computed tomography in two siblings with infantile neuroaxonal dystrophy. The markedly decreased cerebellar perfusion, along with the early motor symptoms, characteristic magnetic resonance imaging and pathologic findings, points to a preferential cerebellar involvement in this disease. A relative increase in the perfusion to the basal ganglia correlated with the magnetic resonance imaging abnormalities, highly resembling that of Hallervorden-Spatz disease in one of the males, at this site.
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