[Brachial diplegia--a post ECC neurological complication of a specific type].

Five cases of neurological disorders occurring after extra-corporeal circulation are presented owing to the singular nature of the clinical picture made up by the essential element of a progressive brachial diplegia, free from any sensory disorder. The topography of the lesion--single medullary lesion or bilateral encephalic--is discussed. An anatomic document enables the elimination of any médullary involvement in one of the cases, thus pointing to a bilateral central lesion. The physiopathological problems are looked at.