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Late-onset Lafora's disease with typical intraneuronal inclusions
M A Kaufman1, A J Dwork, N J Willson
1Department of Neuropathology and Neurotoxicology, New York State Psychiatric Institute, NY 10032.
Neurology
|June 1, 1993
Summary
This case study details late-onset Lafora disease, a progressive myoclonus epilepsy. The patient experienced seizures, dementia, and myoclonus, with Lafora bodies found throughout the brain and heart.
Area of Science:
- Neurology
- Genetics
- Pathology
Background:
- Progressive myoclonus epilepsy (PME) encompasses several rare genetic disorders.
- Lafora disease (LD) is a severe, autosomal recessive PME characterized by neuronal intranuclear and cytoplasmic inclusions called Lafora bodies.
- Late-onset LD is less common than the classical childhood form.
Observation:
- A patient presented with epilepsy and progressive dementia in early adulthood, followed by myoclonus.
- The disease progressed, leading to death at age fifty-four.
- Autopsy revealed ubiquitous Lafora bodies in neuronal perikarya and granular bodies in the neuropil of the cerebral cortex, substantia nigra, and striatum.
Findings:
- Histopathological examination confirmed widespread Lafora body deposition in the central nervous system.
- Abnormal granular deposits were identified in the myocardium, suggesting systemic involvement.
- The distribution of inclusions correlated with clinical manifestations of epilepsy, dementia, and myoclonus.
Implications:
- This case highlights the clinical and pathological spectrum of late-onset Lafora disease.
- Understanding the systemic nature of Lafora body deposition may inform future diagnostic and therapeutic strategies.
- Further research into the pathogenesis of Lafora disease is crucial for developing effective treatments.
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