[Vascular diseases of the liver: cavernous transformation of the portal vein, Osler disease and Budd-Chiari syndrome].

Vascular disorders of the liver except portal hypertension are rare. They can be visualised via ultrasound, as demonstrated by two cases of cavernous transformation of the portal vein, one case of Osler's disease of the liver, and one case of Budd-Chiari's syndrome. The cavernous transformation and the occlusion of the hepatic veins can be diagnosed by ultrasound, while Osler's disease cannot be differentiated with certainty from other disorders.