Megalencephalic leukoencephalopathy with cysts without MLC1 defect.
case_series · Level IV
Where this comes from
- Record sourced from PubMed, PMID 20517947.
- Also identified by DOI 10.1002/ana.21980.
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Abstract
Megalencephalic leukoencephalopathy with subcortical cysts (MLC) is an autosomal recessive disease characterized by early infantile macrocephaly and delayed motor and cognitive deterioration. Magnetic resonance imaging (MRI) shows diffusely abnormal and swollen cerebral white matter and subcortical cysts. On follow-up, atrophy ensues. Approximately 80% of MLC patients have mutations in MLC1. We report 16 MLC patients without MLC1 mutations. Eight retained the classical clinical and MRI phenotype. The other 8 showed major MRI improvement. They lacked motor decline. Five had normal intelligence; 3 displayed cognitive deficiency. In conclusion, 2 phenotypes can be distinguished among the non-MLC1 mutated MLC patients: a classical and a benign phenotype.
Medical subject headings
- Cysts
- Leukoencephalopathies
- Membrane Proteins
- Mutation