portalvenöse Verkalkungen
Portal vein calcification is a rare radiologic finding which can be seen in long-standing portal venous hypertension.
Pathology
Calcium may be deposited in a thrombus or in the wall of the portal vein and is more rarely found in the splenic vein and superior mesenteric vein.
One of the proposed mechanisms includes mechanical stress leading to sclerosis and calcification within the thickened intima and media of the vein.
Calcifications in the portal veins can be of clinical significance as they may be a sign of radiographically occult portal vein thrombosis, which is then discovered during surgery. Transjugular intrahepatic portosystemic stent shunting may also be difficult to perform in these patients .
Associations
Portal vein calcification carries a strong association with long-standing portal venous hypertension regardless of the underlying etiology and a less stronger association with cirrhosis. It can rarely be associated with other entities such as hepatocellular carcinoma.
Radiographic features
It can be occasionally discovered on plain abdominal radiographs or is better demonstrated on CT scan, which can also show concurrent splenic vein and superior mesenteric vein calcification .
History and etymology
It was thought to be first described by Moberg in 1943 on a radiograph.
Siehe auch:
Assoziationen und Differentialdiagnosen zu portalvenöse Verkalkungen:
