Hard to say: There could be many causes of a "lump". If it is causing pain or swelling or difficulty moving your arm, it should be checked by your doctor. If it isn't, you could probably watch it to see if it gets better, or have your doctor check it the next time you see her.
Answered 5/16/2015
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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
10 doctors weighed in across 2 answers
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