Whether a lipoma needs treatment depends on its location, size, shape, and presence of symptoms. If the lipoma is small and symptom-free, it generally does not require treatment. Lipomas are benign lesions formed by abnormal growth of subcutaneous fat and rarely become cancerous. However, if the lipoma is large, causing compressive symptoms, or noticeably growing fast over a short period, along with local pain, it should be considered for complete excision under local anesthesia. After removal, it is generally necessary to send the specimen for pathological examination, and depending on the situation, decide whether to place a drainage tube at the wound site.