Fig. 4
From: Choledochal cyst type I with dilated intrahepatic biliary radicles: a type IVA mimic
A–D: Hematoxylin and eosin (H&E) stain of hepatic and bile duct tissue. (A) 20× showing nodularity with portocaval fibrosis (white and purple asterisk showing the portal triad and central vein, respectively). (B) 4× showing fibrous bands separating hepatic tissue ingue nodules. (C) 4× showing a cysticly dilated duct (yellow asterisk) with subepithelial chronic inflammatory cell infiltrates and fibrosis. (D) 20× showing a section of the bile duct with a portion of the main cysticly dilated lumen (yellow asterisk) and smaller ducts (black arrowheads) lined by columnar epithelium. The duct walls are composed of dense fibrous tissue as well as scattered smooth muscle cells