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目的：探讨超声内镜（ＥＵＳ）对胰胆疾病的诊断价值。方法：对３０例慢性胰腺炎，５０例胰腺癌，１４例十二指肠壶腹癌，９例胆总管癌，３０例胆管结石，８例先天性胆总管囊肿及２例胆总管蛔虫进行ＥＵＳ检查，并与腹部超声（ＵＳ）、ＣＴ及ＥＲＣＰ检查结果进行比较。结果：（１）ＥＵＳ诊断胰胆疾病的敏感性及准确性均显著高于ＥＲＣＰ，假阴性率较低。（２）ＥＵＳ对胰腺癌的显示率达１００．０％，诊断正确率达９４．０％，高于ＵＳ、ＣＴ和ＥＲＣＰ。（３）ＥＵＳ能清楚地显示主胰管及其扩张程度、胰管狭窄部位、胰石和囊肿情况，ＥＵＳ对慢性胰腺炎的诊断率高于ＵＳ，并能对胰实质回声改变进行分型诊断。（４）ＥＵＳ对术前壶腹癌的十二指肠壁、胆总管、胰管、胰头的浸润以及淋巴结转移诊断的正确率分别为８３．３％，６６．７％，５０．０％，３３．３％和１００．０％。结论：ＥＵＳ对胰胆疾病有较大的诊断价值
Objective: To investigate the diagnostic value of endoscopic ultrasonography (EUS) for pancreaticobiliary diseases. Methods: EUS was performed on 30 cases of chronic pancreatitis, 50 cases of pancreatic cancer, 14 cases of ampulla of the duodenum, 9 cases of cholangiocarcinoma, 30 cases of choledocholithiasis, 8 cases of congenital choledochal cyst and 2 cases of common bile duct ascaris Checked and compared with abdominal ultrasound (US), CT and ERCP examination results. Results: (1) The sensitivity and accuracy of EUS in the diagnosis of pancreaticobiliary disease were significantly higher than ERCP, the false negative rate was low. (2) The detection rate of EUS in pancreatic cancer was 100.0%, the diagnostic accuracy was 94.0%, higher than that of US, CT and ERCP. (3) EUS can clearly show the main pancreatic duct and its extent of expansion, pancreatic duct stenosis, pancreatic stones and cysts, EUS diagnostic rate of chronic pancreatitis is higher than the US, and pancreatic echogenic changes can be sub-type diagnosis. (4) The accuracy of EUS in the diagnosis of preoperative ampullary carcinoma of the duodenum wall, common bile duct, pancreatic duct, pancreatic head and lymph node metastasis were 83.3%, 66.7%, 50.0% , 33.3% and 100.0% respectively. Conclusion: EUS has a great diagnostic value for pancreaticobiliary disease