title: Myelination arrest demonstrated using magnetic resonance imaging in a child with type I GM1 gangliosidosis.
abstract: An 18-month-old girl was diagnosed as having GM1 gangliosidosis, on the basis of the clinical symptoms of muscle stiffness, developmental retardation, hepatosplenomegaly, and kyphoscoliosis and a laboratory study that revealed a deficiency in the lysosomal degradative enzyme beta-galactosidase. Magnetic resonance T1-weighted images showed persistent hyperintensity in the bilateral thalami, brainstem, and deep cerebellum at 14 and 18 months of age, indicating arrest of the myelination process in these areas, and that the arrest had occurred at the newborn stage. There was no myelination in the basal ganglia and diffuse leukomalacia developed in the cerebral hemispheres. Only supportive treatment was given; the patient died at 2 years of age. Myelination arrest at the newborn stage associated with progressive leukomalacia is a possible characteristic of GM1 gangliosidosis.
authors.affiliation: Department of Radiology, China Medical College Hospital, Taichung, Taiwan.
authors.forename: W C
authors.initials: WC
authors.lastname: Shen
authors.forename: F J
authors.initials: FJ
authors.lastname: Tsai
authors.forename: C H
authors.initials: CH
authors.lastname: Tsai
mesh_terms: D001921:Brain / Q000473:pathology*; D005260:Female; D016537:Gangliosidosis, GM1 / Q000473:pathology* / Q000503:physiopathology; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D009186:Myelin Sheath / Q000473:pathology* / Q000502:physiology