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Microdeletion 22q11.2 with an estimated incidence of 1:4000 is known to cause the DiGeorge syndrome (DGS) or the velocardiofacial syndrome (VCFS), both usually being diagnosed in the newborn period or childhood. Recent studies have shown that children suffering from VCFS frequently develop psychiatric disorders in late adolescence or adulthood. Here we report the case of a 30-year-old man presenting with slight facial dysmorphisms, hypoparathyreoidism, minor cardiac anomalies, and slight cognitive impairments who had developed a severe personality disorder which eventually led to the diagnosis of microdeletion 22q11.2 with maternal inheritance. Psychiatric patients should be thoroughly examined for typical signs associated with this chromosomal anomaly. Genetic diagnosis is necessary because of the 50% probability of inheritance with possibly severe congenital anomalies. In view of a prevalence of 2% in an unselected group of patients with schizophrenic psychosis, microdeletion 22q11.2 is likely to be underdiagnosed. |
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