[Marchiafava-Bignami disease with favorable development].

A 35 year-old right-handed woman with a history of alcoholism presented signs of interhemispheric disconnection. CT of the brain revealed a low-density areas in the corpus callosum. Two months later, clinical examination was normal, but the CT showed cystic area in the genu and splenium. MRI was also consistent with a lesion of the corpus callosum. CT and MRI did not show lesions in the hemispheric white matter.