title: Persistent diffusion abnormalities in the brain stem of three children with mitochondrial diseases.
abstract: We report 2 children (patients 1 and 2) with Kearns-Sayre syndrome and 1 (patient 3) with Leigh syndrome, who underwent serial diffusion-weighted MR imaging (DWI) studies for 2.8 (patient 1), 4.2 (patient 2), and 1.0 years (patient 3). The DWI revealed the persistent hyperintense signals in the pontine and mesencephalic tegmenta. The apparent diffusion coefficient in the affected regions remained constantly low, suggesting that cytotoxic edema and spongiform degenerations may compose these brain stem lesions.
authors.affiliation: Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sakai
authors.forename: R
authors.initials: R
authors.lastname: Kira
authors.forename: H
authors.initials: H
authors.lastname: Torisu
authors.forename: K
authors.initials: K
authors.lastname: Ihara
authors.forename: T
authors.initials: T
authors.lastname: Yoshiura
authors.forename: T
authors.initials: T
authors.lastname: Hara
mesh_terms: D001479:Basal Ganglia / Q000473:pathology; D001929:Brain Edema / Q000175:diagnosis; D001933:Brain Stem / Q000473:pathology*; D002540:Cerebral Cortex / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D038524:Diffusion Magnetic Resonance Imaging; D004292:Dominance, Cerebral / Q000502:physiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007625:Kearns-Sayre Syndrome / Q000175:diagnosis*; D007888:Leigh Disease / Q000175:diagnosis*; D008297:Male; D009336:Necrosis; D009410:Nerve Degeneration / Q000473:pathology; D009460:Neurologic Examination; D009474:Neurons / Q000473:pathology; D017063:Outcome Assessment, Health Care; D045042:Pedunculopontine Tegmental Nucleus / Q000473:pathology; D013681:Tegmentum Mesencephali / Q000473:pathology