A lipoma is a slow-growing, benign growth of fat cells. It is contained in a thin, fibrous capsule creating a “bump” found right under the skin. A lipoma is typically not tender, moves around easily with slight pressure, and is not cancerous, so treatment is generally not necessary. If the lipoma is on a pressure-bearing area, it may create discomfort, which is why some people may request removal. People also request removal because they don't like the appearance of these bumps. Often a small incision can be made over the lipoma and they can be "popped" out easily, which is a simple in-office surgical procedure under local anesthesia.