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Lipomas

By

Denise M. Aaron

, MD, Dartmouth-Hitchcock Medical Center

Last full review/revision Sep 2020| Content last modified Sep 2020
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Lipomas are soft deposits of body fat that grow under the skin, causing round or oval lumps.

Lipomas are very common. They appear as smooth, soft bumps under the skin. Lipomas range in firmness, and some feel rather hard. The skin over the lipoma has a normal appearance. Lipomas rarely grow more than 3 inches (about 7.5 centimeters) across. They can develop anywhere on the body but are particularly common on the forearms, torso, and neck. Lipomas are more common among women. Some people have only one, but other people develop many lipomas. Lipomas rarely cause problems, although they may occasionally be tender or painful.

Usually, a doctor can easily recognize lipomas, and no tests are required for diagnosis. Lipomas are not a form of cancer and they rarely become cancerous. If a lipoma begins to change in any way, a doctor may do a biopsy (removal of a tissue sample for examination under a microscope).

Treatment of lipomas usually is not required, but bothersome lipomas may be removed by surgery or by liposuction (removal of fat with a suction device).

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