Fig. 1. The concept of placing a stent above the papilla. With the natural papilla functioning as a barrier for duodenal refluxes and food impaction, placing a stent above the papilla (A) should prolonged the stent patency compared with conventionally placing a stent with the distal end inside the duodenum (B).

Gastrointestinal Intervention 2018;7:52~56 https://doi.org/10.18528/gii180013

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