A covered stent is a type of stent that has a covering or membrane over the metal mesh. The covering can be made of different materials such as polyethylene, polytetrafluoroethylene (PTFE), or silicone. Some key points about covered stents:- They are used to treat arterial aneurysms, prevent resteno

ERCP (endoscopic retrograde cholangiopancreatography) is a procedure where a scope is used to access the bile and pancreatic ducts. A stent may be placed during ERCP for several reasons:- To open a bile or pancreatic duct blockage - A stent can prop open ducts narrowed or obstructed by gallstones, t