Lipomas are benign, slow-growing fatty tumors that usually lie between the skin and underlying muscle. Most cause no serious health problems, but they can be noticed or felt. Typical features include: Soft, doughy lump under the skinThe mass feels rubbery and easily moves with gentle finger pressure; it is usually round or oval with smooth edges. Painless swellingMost lipomas do not hurt, but larger ones or those near nerves may produce aching or tenderness if they press on surrounding tissues. Small to moderate sizeCommon diameters are 1–3 cm; “giant” forms can exceed 5 cm and may raise cosmetic concern or... Learn more