[A retrospective analysis of ultrasonic diagnosis for 360 cases of extrahepatic obstructive jaundice].
[cholangiocarcinoma]
To retrospectively analyze the ultrasonic diagnosis of extrahepatic obstructive jaundice, discuss their ultrasonographic characteristics, technical procedures and misdiagnostic reasons and improve the diagnostic proficiency and qualitative accuracy of extrahepatic obstructive jaundice.Retrospective analyses were conducted for the causes, obstructive sites and ultrasonic characteristics of 360 cases of extrahepatic obstructive jaundice confirmed by surgical pathology during 10 years, including choledocholithiasis (n = 205), cholangiocarcinoma (n = 30), pancreatic head carcinoma (n = 44), gall bladder (n = 27), ampullary carcinoma (n = 24), cholangitis (n = 24) and biliary tract roundworm (n = 6).For locating extrahepatic obsrtructive jaundice, the accuracy of ultrasonic diagnosis was 93.6% and that of qualitative diagnosis 87.5%.As an economic, rapid, safe and noninvasive tool, ultrasound is valuable in the diagnosis of extrahepatic obstructive jaundice. It may be applied frequently in non-contraindicated and complication-free patients. However, the diagnostic accuracy is closely correlated with inspector experiences, operative techniques and patient conditions.
