Nota Clínica

Cerebral polymicrogyria and 22q11 deletion syndrome

G. Arriola-Pereda, A. Verdú-Pérez, P. de Castro-De Castro [REV NEUROL 2009;48:188-190] PMID: 19226486 DOI: https://doi.org/10.33588/rn.4804.2008200

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Volumen 48 | Number 04 | Nº of views of the article 8.165 | Nº of PDF downloads 763 | Article publication date 16/02/2009

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ABSTRACT

INTRODUCTION Chromosome 22q11 microdeletion syndrome, DiGeorge syndrome or CATCH 22 spectrum, is characterised by conotruncal heart malformations, facial dysmorphisms, cleft palate, velopharyngeal insufficiency, transient hypocalcemia and T cell disorders. Furthermore, a significant number of patients may present autism-type developmental disorders, learning disabilities, attention deficit hyperactivity disorder or schizophrenia-like psychiatric problems.

CASE REPORT A girl with congenital heart disease that had been treated surgically in the neonatal period, who presented psychomotor retardation, dysmorphic features and microcephaly. The conventional karyotype study that was performed at birth was normal. The physical examination revealed subtle signs of left hemiparesis. A neuroimaging study showed polymicrogyria-type cortical dysplasia that involved the right frontotemporal cortex. A chromosomal study was conducted and findings showed a 22q11.2 chromosome deletion.

CONCLUSIONS Brain malformations in children with deletion of the 22q11.2 chromosome have been reported previously, but their real prevalence and the most frequent type of malformation have not been properly determined. The authors conclude that brain malformations should be studied in all patients with 22q11.2 deletion and it should be borne in mind that all patients with cortical dysplasias may present this deletion. Keywords22q11 deletion Brain malformation Cortical dysplasia DiGeorge syndrome Polymicrogyria Psychomotor retardation

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Nota Clínica

Cerebral polymicrogyria and 22q11 deletion syndrome