Hiya, I read through the sticky but couldnt find a complete answer. Heres the situation I had an operation a few years back when I was younger, it was a precautionary one and the doctor did explain there were no risks involved either way, he stated that having the op would make sure 100% that I never had any form of problems with a particular vein, the problem was never fully explained to me since I was so young but the jist was that due to the blood flow being increased there was a chance later in life (60s and so on) that the heat generated from the extra blood flow in one particular section of the vein might possibly cause some irritant to myself or cause it to enlarge. So in the end they put in a tiny coil to make sure the vein was reinforced and ive not had any problems with it, dont feel it, metal detectors cant pick it up etc... ive run a lot in my time and never had any problems at all and the doctor did assure my parents it would have no bearing on any job I would want to take on. So my question finally is would this rule me out of the royal marines at all, since ive been wondering about it a lot the past few weeks. I realize only the medical staff can give a concise answer but I figured you guys might be able to give me a general idea if I am looking at a fail on the medical stage here.