Many things: it could be many things none of them serious if the lump is actually in the vein it may represent a vein valve that becomes inflamed so it will feel like a bump or it could ba a skin lesion happen to be on the top of the vein if you are concern go and see a doctor you will be examined assured or treated good luck
Answered 10/3/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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