Usefulness of the 2-Devices-in-1-Channel Method in Case of Difficult Selective Biliary Cannulation Due to Parapapillary Diverticulum/Diverticular Papilla.

Purpose: To investigate whether the 2-devices-in-1-channel method is useful for selective biliary cannulation in patients with parapapillary diverticulum or intradiverticular papilla, where the papilla cannot be seen from the front.

Materials And Methods: Biliary cannulation using the 2-devices-in-1-channel method was performed in 28 patients who presented difficulty due to parapapillary diverticulum or intradiverticular papilla. There were 15 men and 13 women whose mean age was 68.