Cranial Magnetic Resonance Imaging Findings in Children With Nonsyndromic Mitochondrial Diseases

Cranial magnetic resonance imaging findings suggestive of specific mitochondrial syndromes are reported. However, cranial magnetic resonance imaging features in children with nonsyndromic mitochondrial diseases are rarely described. From January 1992-September 2009, data from 33 patients with nonsyn...

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Published in:Pediatric neurology 2011-03, Vol.44 (3), p.171-176
Main Authors: Chi, Ching-Shiang, MD, Lee, Hsiu-Fen, MD, Tsai, Chi-Ren, MS, Chen, Clayton Chi-Chang, MD, Tung, Jai-Nien, MD
Format: Article
Language:English
Subjects:
Adolescent
Atrophy - etiology
Biological and medical sciences
Brain - pathology
Child
Child, Preschool
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Female
Follow-Up Studies
Humans
Infant
Lactic Acid - blood
Magnetic Resonance Imaging - methods
Male
Medical sciences
Mitochondrial Diseases - blood
Mitochondrial Diseases - complications
Mitochondrial Diseases - pathology
Neurology
Pediatrics
Retrospective Studies
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Summary:Cranial magnetic resonance imaging findings suggestive of specific mitochondrial syndromes are reported. However, cranial magnetic resonance imaging features in children with nonsyndromic mitochondrial diseases are rarely described. From January 1992-September 2009, data from 33 patients with nonsyndromic mitochondrial diseases were collected. We investigated cranial magnetic resonance imaging features in children with nonsyndromic mitochondrial diseases, and identified potential diagnostic characteristics. Eleven of 33 patients (33.3%) demonstrated normal findings, and 22 (66.7%) demonstrated abnormal findings. The most common abnormal finding was cerebral atrophy, with or without other lesion sites (15/33; 45.5%). The second most common was bilateral basal ganglia involvement (6/33; 18.2%). Follow-up imaging was performed in 20 patients. Ten of these 20 (50.0%) demonstrated evolutionary changes, in which progressive global brain atrophy was evident. Three patients with normal results and one patient with cerebral atrophy on initial imaging demonstrated prominent signal changes over the basal ganglia, brainstem, gray matter, white matter, and bilateral cerebellar hemispheres on follow-up imaging. Imaging in children with nonsyndromic mitochondrial diseases may produce variable findings. Normal results and cerebral atrophy on the initial cranial magnetic resonance imaging are commonly evident in this patient group.
ISSN:0887-8994
1873-5150
DOI:10.1016/j.pediatrneurol.2010.09.009