Carbon dioxide laser removal, this method is very accurate and minimally invasive, but some people who are unique and easy to get angry are very likely to leave punctate scars, because the treatment is relatively shallow, and some moles can not be completely removed, which is very easy to attack. If the nevus in the same place is removed continuously, the probability of canceration of nevus can be increased.
Excision surgery, because melanocytic nevus is actually a small malignant tumor of the skin, but most of them belong to benign tumors, so most doctors also suggest that this kind of excision method will be cleaner, less prone to attack, no irritating nevus and less prone to deterioration. The only thing is that surgical suture requires special equipment to prevent scars as much as possible.
Freezing or corrosion, which is usually limited in depth and easy to affect the surrounding healthy skin, has been basically replaced at present. Indications for removing nevus by freezing method: flat nevus with a diameter of 0.3 ~ 0.5 cm, including freckles. Methods: Cryopreservation with liquid nitrogen made the cells around pigmented nevus form water sores, and then they fell off by themselves. Advantages: the depth of injury is easy to master, it can be cured at one time, and it is not easy to cause obvious scars. Disadvantages: large and thick moles need to be frozen several times to be cured, and special instruments must be equipped, and the doctor's skills are also very important.
Chemical etching method for removing moles: Apply 50% triazole carbonic acid solution or alkaline reagent such as sodium hydroxide on moles. Advantages: Triazole carbonic acid solution is not easy to burn the skin and cause scars; The alkaline solution of sodium hydroxide has strong corrosiveness and quick effect. Disadvantages: triazole carbonic acid solution acts slowly, and the deeper mole may be 10 times; Sodium hydroxide is not easy to control the corrosion depth, and it is easy to cause deep scars.