Add Yahoo as a preferred source to see more of our stories on Google. Dermatologist holding lipoma on patient's arm If you've ever had a lipoma, chances are it freaked you out at first—it's a lump!

Lumps under the skin can be a huge shock for those affected. If they are lipomas, there’s no need to worry: These slow-growing, benign tumors originate from fat cells and are harmless in most cases.