Lipomas are relatively common in clinical settings and are benign tumors on the body surface, often found on the limbs and trunk. Generally, they don't cause obvious clinical symptoms except for the appearance of a lump under the skin. The lump is usually flat, and the skin surface remains intact, though this is not absolute. Some patients may experience pain in the lipoma, particularly when lipomas appear symmetrically on the limbs, causing localized pain. In such cases, surgical treatment is recommended, which can be performed under local anesthesia to remove the lipoma and alleviate the pain.