Pancreatitis complicating mucin-hypersecreting common bile duct adenoma

Figure 1 Endoscopic view showing a dilated papillary orifice exiting mucus.

Figure 2 ERCP demonstrating an intraluminal filling defect in the distal common bile duct. A 8.5Fr stent has been placed.

Figure 3 Surgical specimen showing that the tumor consists of tall, columnar, pseudostratified epithelial cells with elongated or round atypical nuclei. Some of the cells contain large amounts of mucin within the apical cytoplasm (PAS X 400).