Some things should never be left to guesswork. When something new appears on the body, getting it checked is always the smartest move.
A large, round lump on the shoulder blade is a good example. It can grow slowly for years until it becomes the size of a small ball.
Most lumps like this are cysts, sacs under the skin that fill with keratin, while others are lipomas, which are soft growths made of fat.
Because they look similar from the outside, a doctor needs to feel the lump, check how it moves and look for a small opening on top.
Young, healthy people get these lumps too, and many only notice them when a bag strap or a backpack starts to press on the area.
