Webmar 22, 2024 · the sternum, also known as the breastbone, is the long, flat bone in the middle of your chest.
You can have pain in this area because of infection, inflammation,.
Webjul 11, 2024 · a painless lump on the chest can most commonly be caused by a skin condition like an abscess, wart, or cysts.
Rare causes for a painless chest wall lump.