Lumps and bumps can pop up in all
the wrong places from time to time.

Skin: Hidradenitis
What is a lipoma?
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 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.

What causes a lipoma?
The cause of lipomas is not completely understood, but the tendency to develop
them is inherited. A minor injury may trigger the growth. Being overweight does not
cause lipomas.

What are the symptoms of a lipoma?
Lipomas usually:
  • Start out small [0.4 in. to 1.2 in.] when first noticed and are felt just under the
  • Are movable and have a soft, rubbery consistency.
  • Do not cause pain.
  • Remain the same size over years or grow very slowly, but can get quite large.

Often the most bothersome symptom is the location or increased size that makes
the lipoma noticeable by others.  However, when they get larger they can cause
pain by pressing on nearby structures.

How are lipomas diagnosed?
A lipoma can usually be diagnosed by its appearance alone, but your health
professional may want to remove it to make sure the growth is noncancerous.

How are lipomas treated?
Lipomas do not generally require treatment. Because lipomas are not cancerous
growths and cannot become cancerous, they do not need to be removed. There is
no known treatment to prevent lipomas or affect their growth.

A lipoma should 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.
  • Becomes unsightly or bothersome.

Who is affected by lipomas?
Lipomas occur in all age groups but most often appear in middle age. Single lipomas
occur with equal frequency in men and women. Multiple lipomas occur more
frequently in men.
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