Rendezvous-assisted endoscopic retrograde pancreatography in a patient with annular pancreas and coexisting pancreas divisum.

An 18-year-old female was hospitalized for chronic pancreatitis of unknown origin. No history of alcohol abuse and hereditary diseases were found. Enhanced computed tomography (CT) and magnetic resonance cholangiography revealed dilated pancreatic duct system and abnormal pancreatic tissue incompletely wrapping around the second portion of the duodenum ([Fig. 1], [Fig. 2]). Endoscopic retrograde pancreatography (ERP) with intended minor papilla cannulation was attempted and yet failed due to the polypoid nodular papilla ([Fig. 3]).