Brief Article
Copyright ©2013 Baishideng Publishing Group Co.
World J Gastroenterol. Feb 14, 2013; 19(6): 874-881
Published online Feb 14, 2013. doi: 10.3748/wjg.v19.i6.874
Figure 1
Figure 1 An exemplary benign and malignant bile duct stenosis. A: Benign bile duct stricture showing a homogeneous hyperechoic lesion with smooth margins (arrow); B: Malignant stricture showing bile duct wall thickening and irregular margins (arrow).