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Metallic stent with high axial force as a risk factor for cholecystitis in distal malignant biliary obstruction

Tumor involvement to the orifice of cystic duct (OCD) is a risk factor for cholecystitis after self‐expandable metallic stent (SEMS) placement, but its prevention is still difficult. We conducted this multicenter analysis to clarify a type of SEMS or a method to place SEMS which would decrease the incidence of cholecystitis after SEMS placement.