Expert consensus on the classification of subtype in Budd-Chiari syndrome

From 2012 to 2015 the Department of Interventional Radiology of the Affiliated Hospital of Xuzhou Medical University undertook the clinical special research subject” Study on the standardization of interventional diagnosis and treatment of Budd-Chiari syndrome” (No.BL2012021) , a program supported by the Department of Science and Technology of Jiangsu Province.Based on the clinical results of three years research and the scientific summary of the experience from more than 2150 cases accumulated in more than 20 years, the Department of Interventional Radiology of the Affiliated Hospital of Xuzhou Medical University presided over a demonstration meeting about “the standardization of interventional diagnosis and treatment of Budd-Chiari syndrome” on January 14, 2016 in Xuzhou City of Jiangsu Province, China.The scholars from the Expert Committee on Vena Cava Obstruction of Specialized Committee of Endovascology, Chinese Medical Doctor Association, as well as the experts from the related medical fields, including interventional radiology, vascular surgery, pathology and diagnostic imaging, who have been engaged in the study of Budd-Chiari syndrome, attended the meeting, and in the meeting the participants made a full and thorough discussion on the classification and subtypes of Budd-Chiari syndrome.The scholars and experts have unanimously reached a consensus on the subtype definition of Budd-Chiari syndrome:the Budd Chiari syndrome is suggested to be classified into the hepatic vein occlusion subtype, the inferior vena cava occlusion subtype and mixed occlusion subtype, including 10 subtype entities in total.The hepatic vein occlusion subtype includes membranous occlusion of hepatic vein/accessory hepatic vein, segmental occlusion of hepatic vein, extensive occlusion of hepatic vein, and hepatic vein occlusion associated with thrombus formation.The inferior vena cava occlusion subtype includes inferior vena cava membranous occlusion with hole in membrane, inferior vena cava membranous occlusion, segmental occlusion of inferior vena cava, and inferior vena cava occlusion with thrombus formation.The mixed occlusion subtype includes occlusion of hepatic vein and inferior vane cava, and occlusion of hepatic vein and inferior vane cava associated with thrombus formation.