Figure 5
From: A case study of a collision tumor composed of cancers of the bile duct and pancreas
Two histologically different tumors observed in the head of the pancreas. Within the pancreatic parenchyma, there is a ductal structure with nuclear atypia (a) (H.E., ×40). Two types of carcinoma collide with each other in the pancreas (b) (immunostaining for p53).