A self-expanding metallic stent (SEMS) is a small mesh tube that is inserted into the esophagus to help keep it open. Here are some key points about SEMS in the esophagus:- They are made of materials like nitinol (nickel-titanium alloy) that allow them to expand and conform to the shape of the esoph

A fully covered esophageal stent is a type of stent that has a membrane or covering that fully encases the metal mesh of the stent. Some key points about fully covered esophageal stents:- Covering - The stent is wrapped in a thin, flexible material such as silicone or polyurethane. This covering p