title: Reversible white matter lesion in methionine adenosyltransferase I/III deficiency.
abstract: A 5-year-old boy with methionine adenosyltransferase (MAT) I/III deficiency, under treatment for the tentative diagnosis of homocystinuria, presented with mildly decreased appetite and sleepiness. MR imaging showed abnormal T1 and T2 prolongations and reduced diffusion in the cerebral white matter. Clinical symptoms and MR imaging findings improved after discontinuation of therapy. We speculate that inappropriate treatment might enhance CNS lesions of MAT I/III deficiency by causing a reversible vacuolating myelinopathy.
authors.affiliation: Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan.
authors.forename: Hiroko
authors.initials: H
authors.lastname: Tada
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Takanashi
authors.forename: A James
authors.initials: AJ
authors.lastname: Barkovich
authors.forename: Shigenori
authors.initials: S
authors.lastname: Yamamoto
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Kohno
mesh_terms: D001921:Brain / Q000473:pathology*; D002675:Child, Preschool; D003541:Cystathionine beta-Synthase / Q000172:deficiency; D003951:Diagnostic Errors; D006712:Homocystinuria / Q000209:etiology; D006801:Humans; D007527:Isoenzymes / Q000172:deficiency; D008279:Magnetic Resonance Imaging; D008297:Male; D008661:Metabolism, Inborn Errors / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy; D008716:Methionine Adenosyltransferase / Q000172:deficiency*
chemical_list: D007527:Isoenzymes; D008716:Methionine Adenosyltransferase; D003541:Cystathionine beta-Synthase