I recently discovered when i raise my right arm, there is a 'lump
'. However, i cannot tell whether it is normal as in
a muscle or bone from my
shoulder area or indeed a lump. I can see it when i raise my arm straight up, and it is kinda in the area where the arm meets the center of the armpit. It is rather large, around a golf ball size. On my left arm there is a very similar 'lump' but just a slight bit smaller.