Aicardi syndrome in a girl with mild developmental delay, absence of epilepsy and normal EEG.

We report a 6-year-old girl with corpus callosum agenesis and other cerebral malformations, scoliosis and hypopigmented chorioretinal lacunae in both fundi typical of Aicardi syndrome. She has never had epilepsy and the EEG has always been normal, observations not reported previously in Aicardi syndrome. She was mildly mentally retarded with a full scale IQ of 61. The patient exhibited an unusually mild Aicardi syndrome phenotype.