question: I have a small hard painless lump in front of the shoulder outside of the armpit, never had any bad medical history at all! clean bill of health . now age 51  5'7'' 155 lbs. I have had this for at least ten years when I had a muscle tear in back shoulder blade from working out. it developed after all that, X-rays showed no tendon problems and I recouped in a couple of weeks. Just curious if this is a dropped muscle? thanks Vito