What is a lipoma?
A lipoma is a growth of fat cells in a thin, fibrous capsule usually found just below the skin. Lipomas aren’t cancer and don’t turn into cancer. They 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.
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?
Are small [0.4 in. (1 cm) to 1.2 in. (3 cm)] and felt just under the skin.
Are movable and have a soft, rubbery consistency.
Do not cause pain.
Remain the same size over years or grow very slowly.
Often the most bothersome symptom is the location or increased size that makes the lipoma noticeable by others.
How are lipomas diagnosed?
A lipoma can usually be diagnosed by its appearance alone, but your doctor may want to remove it to make sure the growth is noncancerous.