Transiently reduced water diffusion in the corpus callosum in infants with benign partial epilepsy in infancy.

Neuroimaging findings are usually normal in children with benign partial epilepsy in infancy. However, we found a transient reduction of water diffusion in the corpus callosum in two patients with probable benign partial epilepsy in infancy. The patients were admitted to our hospital because of seizure clusters. No delay in the developmental milestones was seen, and no neurological abnormalities were observed during the interictal period. Interictal electroencephalography was normal in both infants. However, the diffusion-weighted images showed abnormal high intensities in both the genu and splenium in one patient and in the splenium only in the other. No diffusion abnormalities were observed in follow-up magnetic resonance imaging. The clustered seizures may be related to the transient callosal lesions seen in our patients.