2. Freezing nevus removal: Freezing nevus removal and chemical corrosion are not suitable, because it may remove impurities and stimulate the malignant transformation of nevus cells.
3, surgical removal of moles: surgical removal of colored moles can make up for the shortcomings of the above methods. With a trephine 0.2 cm larger than the diameter of the nevus, the pigmented nevus was completely removed after local skin anesthesia, and the incision was sutured with very thin silk thread. Because the incision is skillfully matched with facial lines or skin lines, the postoperative scar is not obvious, and the beauty and illness are both harvested, so there is no need to worry about "disfigurement".
Extended data:
Precautions:
Pigmented nevus can be divided into borderline nevus, intradermal nevus and compound nevus according to the location of its cells in the skin. Intradermal nevus is a pigmented nevus with cells located in the dermis, which rarely becomes malignant. Borderline nevus is a kind of cell with multiple nests at the junction of epidermis and dermis, which can appear as light or dark brown spots, papules or small nodules that are smooth, hairless, flat or higher than the skin. This kind of nevus is easy to become malignant. Compound nevus is a mixed form of the above two kinds of nevus. In the process of nevus cells entering dermis, there are both intradermal nevus and residual borderline nevus.
If the pigmented nevus on the face is often stimulated by various frictions and injuries such as scraping, touching, pinching, pulling, etc., itching and burning may occur, and the volume of the nevus will increase to varying degrees, and the color will deepen or be infected, broken and bleeding. At this time, we should be alert to its evil change.
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