title: Brain MR imaging in acute hyperammonemic encephalopathy arising from late-onset ornithine transcarbamylase deficiency.
abstract: The brain MR imaging characteristics of three patients with acute hyperammonemic encephalopathy resulting from late-onset ornithine transcarbomylase deficiency are presented. MR images revealed injury to the cortex, especially the cingulate gyrus and insular cortex, with sparing of the perirolandic and occipital cortices. These findings presumably reflect the distribution of brain injury from hypoperfusion secondary to hyperammonemia. Knowledge of the MR findings may help expedite diagnosis and treatment and prevent chronic impairment.
authors.affiliation: Neuroradiology Section, Department of Radiology, University of California San Francisco, USA.
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Takanashi
authors.forename: A James
authors.initials: AJ
authors.lastname: Barkovich
authors.forename: Sabrina F
authors.initials: SF
authors.lastname: Cheng
authors.forename: Dana
authors.initials: D
authors.lastname: Kostiner
authors.forename: John C
authors.initials: JC
authors.lastname: Baker
authors.forename: Seymour
authors.initials: S
authors.lastname: Packman
mesh_terms: D001921:Brain / Q000473:pathology*; D002545:Brain Ischemia / Q000175:diagnosis* / Q000235:genetics; D002540:Cerebral Cortex / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006179:Gyrus Cinguli / Q000473:pathology; D006801:Humans; D022124:Hyperammonemia / Q000175:diagnosis* / Q000235:genetics; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D020163:Ornithine Carbamoyltransferase Deficiency Disease / Q000175:diagnosis*