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(a) The imaging of minor papilla is done about 1-2 cm above the major papilla. It is seen as a 2-4-mm hypoechoic area along the muscularis propria of the duodenal wall. In this case, the major papilla (size 1 cm) and minor papilla (size 4 mm) is seen. (b) The duct of Santorini is draining the minor papilla
