Everyone has some “marks” on their body, some are big and some are small, many of them grow in hidden places or can be removed by laser, but once they grow in conspicuous places or have to be removed, we have to choose surgery to remove them. What is a pigmented mole? It is a skin manifestation caused by the increase of melanocytes in the epidermis and dermis. Nevus removal is a surgical or laser method of removal to obtain aesthetic skin appearance. Pathologically, pigmented nevi are divided into three categories: junctional nevus, intradermal nevus, and mixed nevus, depending on the level of nevus cells in the skin. The removal of pigmented nevus is usually done by laser and surgical excision, so what kind of nevus needs surgical excision? ①If the color of the nevus changes or grows rapidly or the surface breaks down, malignant changes should be suspected, and then the nevus should be removed and sent for pathological examination. ② Moles that affect the appearance or beauty of the face and cannot be removed by non-surgical methods can be removed. What is a skin swelling? Simply put, the skin and subcutaneous swelling that can be seen or clearly felt is the body surface swelling. Common surface lumps are: acne (sebaceous cysts), lipomas, fibromas, hemangiomas, lymphangiomas, neurofibromas, xanthomas, and dermatoid cysts, all of which are surface lumps. The most common moles and the less common skin cancers are also considered surface masses. Not all body surface masses must be removed, what kind of masses need to be removed? ①Masses on the face or other exposed areas that need to be removed for cosmetic reasons. If the swelling is or may be malignant, it must be surgically removed. ③ Benign lumps that may cause pain or adverse effects, such as hemangiomas and lymphangiomas, also need to be removed. What are the general surgical procedures for removing pigmented nevi and skin masses? Simple excision and suture: for small swelling or scar, the surrounding skin tissue is rich, and can be directly pulled together and sutured; local flap repair after excision: for large swelling or scar, which cannot be pulled together and sutured, and need to use the surrounding tissue to repair, and the surgical incision needs to be prolonged; partial excision: for large size of nevus, and partial excision several times, with an interval of more than 3 months between two times. Regardless of whether it is laser removal or choice of surgical excision, once improperly handled, the consequences are quite serious. If the removal is not clean, the risk of stimulating melanin cells and contributing to cancer is quite high. Therefore, we must choose professional doctors in regular hospitals for treatment, and the right choice is the guarantee of our beauty.