RecruitingClinical trialEvaluation of Portal Vein Stenting in Patients With Portal Vein Stenosis and Gastrointestinal CancersThis study collects information about the safety and effect of portal vein stenting in gastrointestinal cancer patients with portal vein stenosis. This study may help researchers learn how long the portal vein stays open and free from blockage and the effects of portal vein stenting on patients' overall well-being.