my right clavicle bone is far more prominent than the left, it is not painful, but I have noticed it is quite larger than I've noticed it to be in the past.
I did have a dislocated shoulder over 15 years ago, have not had any trouble until about 2 years ago, when I had a very slight tear in the rotator cuff that with excercise and modification of lifting I was able to get healed up. I do still have some pain at night as I sleep with my right arm tucked under my head, tho I do try to use 2 pillows to keep the weight of my head off my shoulder. I do also have lots of popping and cracking noise in my shoulder when I move it, I am not sure if the two are connected. I am wonder what this enlargement of the bone could be from and if I should have it looked at.