Re: Arm lumps
I have never heard of or seen that, sorry! However, one of the best pieces of advice that I get (and find incredibly hard to follow) is: If it is not physically bothering you, you don't have other symptoms or pain, etc. try not to sweat it. However, if it is stressing you out, maybe you can just pop in to your doctor and let them have a look. Perhaps they will reassure you.
I hope you find your answers!