Bilateral occipital cortical dysplasia and white matter T2 hyperintensity with mild non-specific myopathy: two sibling cases.

Abstract

We report two heterosexual sibling cases of mild non-specific myopathy, with bilateral occipital cortical dysplasia and diffuse white matter hyperintensity on brain magnetic resonance imaging (MRI). The histological examination of the muscle in the elder sister revealed non-specific myopathic changes and no reductions of alpha-dystroglycan and laminin alpha2 expressions. The characteristic findings in the occipital lobe on brain MRI in both cases suggested cobblestone lissencephaly. Disrupted structure of the glia limitans and pial basement membrane complex, by a cause other than an alpha-dystroglycan and laminin alpha2 abnormality, may be the cause of the cortical dysplasia in the sibling cases.

• Authors: Tohru Okanishi, Tatsuya Ishikawa, Satoru Kobayashi, Naoki Ando, Ichizo Nishino, Hajime Togari, Ikuya Nonaka
• Journal: Brain & development (Brain Dev) Vol. 32 Issue 4 Pg. 342-6 (Apr 2010) ISSN: 1872-7131 [Electronic] Netherlands
• PMID: 20022722 (Publication Type: Case Reports, Journal Article)
• Copyright: Copyright (c) 2009 Elsevier B.V. All rights reserved.

Chemical References

• Laminin
• Dystroglycans

Topics

• Adolescent
• Child
• Dystroglycans (metabolism)
• Electroencephalography
• Female
• Humans
• Laminin (metabolism)
• Magnetic Resonance Imaging
• Malformations of Cortical Development (pathology)
• Middle Aged
• Muscle, Skeletal (pathology)
• Muscular Diseases (pathology)
• Occipital Lobe (pathology)
• Siblings