A<unk>  is a benign tumor made of fat tissue. They are generally soft to the touch, movable, and painless. They usually occur just under the skin, but occasionally may be deeper. Most are less than in size. Common locations include upper back, shoulders, and abdomen. It is possible to have a number of<unk> s. The cause is generally unclear. Risk factors include family history, obesity, and lack of exercise. Diagnosis is typically based on a physical exam. Occasionally medical imaging or tissue biopsy is used to confirm the diagnosis. Treatment is typically by observation or surgical removal. Rarely, the condition may recur following removal, but this can generally be managed with repeat surgery. They are not generally associated with a future risk of cancer.<unk> s have a prevalence of roughly 2 out of every 100 people.<unk> s typically occur in adults between 40 and 60 years of age. Males are more often affected than females. They are the most common noncancerous soft-tissue tumor. The first use of the term<unk> " to describe these tumors was in 1709.
Lipoma
Liposarcoma
Askin's tumor
Lipomatosis
Breast cyst
Hibernoma
Condyloma
Teratoma