Ultrasonographic characteristics of cholangiectasis in differential diagnosis of diseases of bile duct obstruction / 中国介入影像与治疗学

ABSTRACT

Objective To probe the significance of ultrasonographic characteristics of cholangiectasis in differential diagnosis of the diseases of bile duct obstruction (DBDO) .Methods A total of 164 patients with DBDO were divided into 4 groups:bile duct calculi (n=52) ,cholangiocarcinoma (n=56) ,cystic dilatation of biliary duct (n=32) and bile duct papilloma (n=24) .The ultrasonographic characteristics of cholangiectasis were classified as regular type,abnormal type,cystic dilated type and bile lake type.The average value of the largest diameter of the bile duct (DBD) and the percentage of each type of the cholangiectasis of each group were compared.Results The accuracy of ultrasound for the diagnosis of 164 DBDO was 98.17% (161/164) .DBD of both bile ducts of calculi and cholangiocarcinoma were different from that of cystic dilatation of biliary duct and bile duct papilloma,respectively (P＜0.01) ,as well as between cystic dilatation of biliary duct and bile duct papilloma (P＜0.01) .The percentage of regular type of cholangiectasis in bile duct calculi (65.38%,34/52) ,abnormal type in cholangiocarcinoma (83.93%,47/56) ,cystic dilated type in cystic dilatation of biliary duct (81.25%,26/32) and bile lake type in bile duct papilloma (83.33%,20/24) was different from those of others,respectively (P＜0.01) .Conclusion Different ultrasonographic characteristics of cholangiectasis has important clinical significance in the differential diagnosis of DBDO.