A lipoma is a growth of fat cells in a thin, fibrous capsule usually found just below the skin. Lipomas are found most often on the torso, neck, upper thighs, upper arms, and armpits, but they can occur almost anywhere in the body. One or more lipomas may be present at the same time. Lipomas are the most common noncancerous soft tissue growth.
A lipoma may be surgically removed if symptoms develop, such as if the lipoma:
- Becomes painful or tender.
- Becomes infected or inflamed repeatedly.
- Drains foul-smelling discharge.
- Interferes with movement or function.
- Increases in size.