Lipomas usually require surgery to eliminate. Lipoma, a slow-growing benign tumor, the exact cause of which is not entirely clear, may be related to genetic factors, abnormalities in fat metabolism, and so on. It may cause a subcutaneous mass, mostly between the skin and muscle, and may have the appearance of a slight protrusion as well as a palpable lump. Most lipomas are painless and itchy, but if there is pressure on the nerves or secondary infection, there will be pain, numbness and other symptoms. The most direct and effective way to eliminate lipomas is through surgical removal. Generally, lipoma is a benign, slow-growing disease with no other symptoms and does not require any special treatment, but regular checkups are needed.