Value of endoscopic ultrasonography for differential diagnosis of benign and malignant bile duct dis- tal stenosis / 中华消化内镜杂志

ABSTRACT

Objective To study the diagnostic value of endoscopic ultrasonography (EUS)for biliary stenosis.Methods Data of 83 patients with bile duct stenosis who underwent EUS from January 2010 to June 2012 at endoscopic center of Tianjin Nankai Hospital were reviewed.The EUS qualitative diagnosis and final diagnosis,and the accuracy of EUS for the lower malignant bile duct stenosis were analyzed.Results Malig-nant stenosis were confirmed histopathologically in 55 patients;benign stenosis were confirmed in 28 patients based on negative tissue sampling or extended clinical follow-up.Sensitivity,specificity,positive predictive val-ue,negative predictive value and accuracy of EUS for malignant bile duct stenosis were 98.2%(55 /56), 81.5%(22 /27),91.7%(55 /60),95.6%(22 /23)and 92.8%(77 /83),respectively.Conclusion The sensitivity and accuracy of EUS for the lower malignant bile duct stenosis is high,which is of clinical value.