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Published on: January 11, 2014
Neurogenic muscle hypertrophy in type III spinal muscular atrophy
Jeeyoung Oh1, Seung-Min Kim, Dong-Seok Shim
1Department of Neurology, Konkuk University School of Medicine, Seoul, Republic of Korea.
Abstract:
Neurogenic muscle hypertrophy is very unusual and has been rarely described. We described a 25-year-old woman presented with proximal muscle weakness with calf muscle hypertrophy. Limb magnetic resonance imaging scans showed increased muscle bulk without fatty changes, and a muscle biopsy revealed prominent hypertrophic type II muscle fibers. A mutation in SMN1 was found in a genetic analysis. This is the first report of neurogenic muscle hypertrophy seen in genetically confirmed spinal muscular atrophy III.
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