DOI: 10.36347/sjmcr.2020.v08i08.015

Pages: 799-803

Hepatic perfusion disorders are focal or diffuse abnormalities of the parenchymal enhancement after injection of contrast agent. Superior vena cava thrombosis disease is relatively rare due in most cases to external compressions of the superior vena cava (SVC) by a mediastinal neoplasm: lymphadenopathy, mediastinal tumor. Several venous collateral pathways usually can develop allowing blood to return to the right atrium such us systemic-portal-shunting which are rarely involved. This leads to an increase flow sat the lower vein cava and the liver. We will expose in this work through two cases of thrombosis of the superior vena cava, the development mechanisms of the various collateralities involved creating systemo-portal anastomoses at the origin of these perfusion disorders as well as their translation in computed tomography.