Fig. 4From: Cholangiocarcinoma identified in perforated choledochal cyst in a 3-year-old boyHistology of the cholangiocarcinoma in the case (HE×100). A-C: The glandular structures were ethmoid or multilayered in cancerous sites (arrows). Interglandular fusion was observed. Epithelial cells also had typical atypiaBack to article page