A Lipoma or sebaceous cyst, is made up of lobes of adipocytes mature, usually surrounded by a fibrous capsule. They are located under the skin. It has a soft and rubbery consistency. They are mobile. They maintain the same size or grow very slowly.

Although they do not usually cause pain, sometimes they can cause it, if when growing they press on a closed nerve or if they are surrounded by blood vessels.

Most lipomas or sebaceous cysts can be removed easily under local anesthesia using cosmetic surgery techniques, leaving a small scar that is carefully closed with intradermal stitches, to improve healing.