Fig. 8

a The cut surface of the formalin-fixed specimen. The whitish-hard tumor with an irregular border on the central part of the lesion, including the necrotic part inside, involving the bile duct, was considered a pancreatic adenocarcinoma, while the whitish-yellow peripheral tumor was considered a malignant lymphoma. b Schema of the cut surface. The red area, representing the adenocarcinoma, was surrounded by the blue area, representing malignant lymphoma