Lipomas and liposarcomas are both relatively common diseases in clinical practice. Lipoma is a benign tumor, which refers to the nodular lesions formed by subcutaneous fat hyperplasia. The tumor has clear boundaries, a complete capsule, a soft texture, and grows slowly. Clinically, it can be treated by surgical removal, requiring only local excision. Liposarcoma is a malignant tumor of fat, originating from the interlobular fat tissue. The tumor lacks a capsule, has unclear boundaries, a harder texture, and grows rapidly. Clinically, after diagnosing liposarcoma, surgery must be performed. The scope of the surgery is relatively large, requiring the removal of the lesion and the surrounding tissues to achieve a radical cure.