Epileptic seizures, hemiplegia and hyperglycemia: late discovery of a localized cortical dysplasia.

A 56-year-old woman was hospitalized with a right hemiplegia and aphasia ev oking a cerebral infarction. In fact the neurologic deficits were of post-i ctal origin, secondary to a partial epilepsy which began a few weeks before , at the same time as a polyuria-polydipsia syndrom revealing diabetes mell itus. This case illustrates the possibility for a partial epilepsy to occur in relation with a nonketotic hyperglycemia. If in most of those cases the re is no underlying cortical lesion, in some observations the hyperglycemia is associated with an infarction. In our case the MRI revealed another typ e of lesion: a cortical dysplasia in form of a unilateral micropolygyria wi th a perisylvian distribution centered around the insula. The discovery of a cortical dysplasia at such an age is very unusual.