Epilepsy and ring chromosome 20: case report

Arquivos de Neuro-Psiquiatria

Marleide Da Mota Gomes²  Irene Lucca²  Sonia Alonso Monteiro Bezerra²  Juan Llerena Jr¹  Denise Madeira Moreira² 

[1],Instituto de Neurologia Deolindo Couto Programa de Epilepsia

关键词: ring chromosome 20;    epilepsy;    mental retardation;    cromossomo 20 em anel;    epilepsia;    retardo mental;   

DOI  :  10.1590/S0004-282X2002000400022

来源: SciELO

【 摘 要 】

We present the clinical, electroencephalographic, neuroimaging (brain magnetic resonance image - MRI and spectroscopy by MRI) and cytogenetic findings of a young male patient with a rare cytogenetic anomaly characterised by a de novo 46,XY,r(20)(p13q13.3) karyotype. He presents with mental retardation, emotional liability, and strabismus, without any other significant dysmorphies. There are brain anomalies characterised by corpus callosum, uvula, nodule and cerebellum pyramid hypoplasias, besides arachnoid cysts in the occipital region. He had seizures refractory to pharmacotherapy and long period of confusional status with or without a motor component. The authors recognised that the EEG pattern was not fixed but changed over time, specially for bursts of slow waves with great amplitude accompanied or not by sharp components, and bursts of theta waves sharply contoured. Previously, epilepsy solely has been assigned to region 20q13. However, the important structural cerebral alterations present in our case has not been reported associated to such chromosomal abnormality and may indicate possible new chromosomal sites where such atypical neurological characteristics could be mapped.

【 授权许可】

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