Fig.4From: Spontaneous common bile duct perforation due to choledocolithiasis accompanied with pancreaticobiliary maljunction in an adult: a case reportPathological findings. Hematoxylin and eosin staining revealed that the resected specimen of the common bile duct wall was destroyed that the muscular layer lacked continuity (a). Immunohistochemical examination with anti-desmin antibody did not show the presence of smooth muscle in the tissue (b)Back to article page