Percutaneous Transhepatic Venous Embolization and Portal Vein Stenting for Ectopic Variceal Bleeding at Choledochojejunostomy After Pancreaticoduodenectomy With Portal Vein Stenosis: A Case Report

经皮肝穿刺静脉栓塞术和门静脉支架置入术治疗胰十二指肠切除术后胆总管空肠吻合口异位静脉曲张出血合并门静脉狭窄：病例报告