Lipomas are considered superficial tumors, often caused by proliferation of subcutaneous fat. When lipomas occur, patients may feel localized pain, but most patients do not have significant pain symptoms. Instead, a mass appears under the skin, which typically presents as lobulated, can be moved, and has a smooth surface. The consistency is either relatively firm or soft. These are typical clinical manifestations of lipomas. Clinically, an ultrasound examination is needed to assist in the diagnosis, and surgical removal is recommended after diagnosis.