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Monomelic amyotrophy with late progression.
J Rowin1, M N Meriggioli, E J Cochran
1Section of Neuromuscular Disease, Department of Neurological Sciences, Rush University, Chicago, IL, USA. jrowin@rush.edu
Neuromuscular Disorders : NMD
|April 12, 2001
Summary
Monomelic amyotrophy, a juvenile-onset muscle wasting disease, typically stabilizes. This case shows it can rarely progress to lower limbs years later.
Area of Science:
- Neurology
- Clinical Medicine
- Rare Diseases
Background:
- Monomelic amyotrophy (MA) is a rare, sporadic, juvenile-onset motor neuron disease.
- Characterized by unilateral hand muscle weakness and atrophy.
- Generally considered benign and non-progressive, stabilizing within five years.
Observation:
- This report details a rare case of monomelic amyotrophy.
- The patient experienced a prolonged period of disease stability.
- Late clinical progression to the lower extremities was observed.
Findings:
- Monomelic amyotrophy can exhibit late-onset progression beyond the typical five-year stabilization period.
- Progression may extend to affect lower limb muscles.
- This challenges the established understanding of MA as strictly non-progressive.
Implications:
- Highlights the need for long-term monitoring in monomelic amyotrophy patients.
- Suggests a potential for delayed or atypical disease trajectories.
- Informs differential diagnosis and management strategies for motor neuron diseases.