Hello Arthur S,
A stent is a tiny cylindrical tube implanted in your coronary vessels (the arteries that supply your heart with blood) to improve the blood supply to your heart. Here is a link to a good picture of a stent that should give you perspective on its size.
There are actually many different kinds of stents, differing in size and application, that doctors use in medical practice. Stenting is a term that, at its most general, means to keep open or reopen a hollow tube in the body. Any hollow tube, from your esophagus to your colon (with your aorta in the middle), can be stented!
To your health,
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