|From Wikimedia, Dr Haudebourg|
Stents are tubes or tube-like materials used to keep a passageway in the human body open. Most commonly, the passage is a blood vessel, but stents are also used to treat esophageal disorders, kidney blockage, bile duct disorders, and complications of gastrointestinal cancer. Many stents are used with permanency in mind, but re-operation does occur under some circumstances and some conditions only require temporary placement.
Read the specifics about how long a stent stays in the human body for esophageal, rectal, ureter, bile duct, and cardiac treatments.