An esophageal stent cannot be removed and can remain in the body if there are no other complications, such as perforation or bleeding. Esophageal stents can be used in cases such as narrowing of the esophagus caused by esophagitis and narrowing caused by esophageal cancer. By implanting an esophageal stent, the narrowed esophagus is re-dilated. Esophageal stents include retrievable stents and non-retrievable stents. Non-retrievable stents often do not need to be removed; when retrievable stents are difficult to remove, they can be left in the body if there are no other complications, such as perforation or bleeding, to avoid secondary damage to the esophagus when the stent is removed. The implantation and removal of esophageal stents should be done under the guidance of a professional doctor. If a retrievable stent is difficult to remove, the doctor should determine whether to try to remove it again.