[Neurological manifestations of Rendu-Osler-Weber disease. Apropos of 4 cases].

Rendu-Osler-Weber disease is a generalized vascular dysplasia which also involves the central nervous system. The neurological manifestations of the disease are due either to primary intracranial or spinal vascular lesions or to neurological complications of other visceral lesions, notably those of the lung (arteriovenous fistulae). The prevention of ischaemic or infectious cerebral accidents rests on the anatomical (excision) or functional (selective embolization) exclusion of pulmonary arteriovenous fistulae, when present.