The covered self-expandable metallic stent(SEMS) has been developed to overcome the problem of tissue ingrowth,However,stent migration is a well-known complication of covered SEMS placement.Use of a double pigtail stent to lock the movement of the SEMS and prevent migration has been advised by many experts.Unfortunately,in our case this technique led to an incidental upward migration of the SEMS.We used APC to create a side hole in the SEMS for plastic stent insertion as stent-in-stent.This led to a successful prevention of stent migration. The covered self-expandable metallic stent (SEMS) has been developed to overcome the problem of tissue ingrowth, However, stent migration is a well-known complication of covered SEMS placement. Use of a double pigtail stent to lock the movement of the SEMS and prevent migration has been engaged by many experts.Unfortunately, in our case this technique led to an incidental upward migration of the SEMS.We used APC to create a side hole in the SEMS for plastic stent insertion as stent-in-stent.This led to a successful prevention of stent migration.