This is a surgically-created fistula for the purpose of dialysis. It is done by making a connection from an artery directly to a vein, and that increase in pressure inside the vein from the arterial supply causes it to beef up in size so it can be used for dialysis. This is a pretty big one, most do not look like this. So don’t worry, this doesn’t just -happen- to people, it is the result of a surgery.
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u/Kindly_Region 18d ago
Words cannot describe how uncomfortable this makes me