Indeed, it is sometimes difficult to distinguish the early stage of clinical skin cancer from the nevus on the skin, which must be differentiated and diagnosed by skin biopsy and pathological examination. Therefore, today we will talk about the types and treatment methods of nevus, and how to check the changes of nevus by DIY at home.
Usually, you will find that the colors of nevus are blue, black, brown, etc. Some are flat, and some are convex. This is because nevus is composed of nevus cells, which can be roughly divided into:
1. Dermal nevus: There are many nevus cells and they grow deep into the dermis, showing a convex state.
2. Junction nevus: The number of nevus cells is small, only located at the junction of epidermis and dermis, which is a flat nevus.
3. Compound nevus: The number of nevus cells is moderate, which will appear at the junction and dermis, because the surface of nevus is flat and convex.
-----------. When melanin penetrates into the dermis, the color will appear blue-black, which is called blue nevus. Sometimes hair follicles will be surrounded by nevus cells, and nevus will grow fine hairs, which is a normal phenomenon.
The cause of moles is not clear, but it may be stimulated by hormones and ultraviolet rays. It is possible to grow new moles at any time in your life, especially around puberty, which usually increases slightly with time. A few moles may disappear automatically after a few years. These are normal phenomena, so you don't have to worry too much. Just observe them regularly.
Five tips of "ABCDE" for distinguishing "nevus" from "skin cancer" by DIY inspection at ordinary times:
Asymmetrical: asymmetrical shape
Border irregular: irregular edge
Color uneven
Diameter > .6cm: Diameter greater than .6cm
. For normal moles, everyone should also check themselves regularly. Once they become bigger rapidly, they should be removed and tested if there is pain, itching, ulceration and bleeding.
The method of removing moles Many people think that it is enough to use a little bit of liquid medicine in the night market. In fact, it is not safe to burn the skin with corrosive drugs. Once the concentration is too strong and the depth of action cannot be controlled, it may leave a concave scar. It is best to operate it by a qualified doctor. Moreover, the method of removing nevus should be selected according to the types of nevus:
1. The flat and slightly convex compound nevus and the junction nevus can be removed by drug cauterization, high-frequency electrocautery or laser, which requires more than two to four courses of treatment. At present, ruby laser, rubidium-chromium laser, erbium-chromium laser, etc. are the mainstream of removing nevus in major medical hospitals, with good effects and less scars.
2. Protruding dermal nevus and blue nevus: The growth position is deep, which cannot be completely removed by current technology without leaving any trace. If you want to use laser electric burning to remove it, it is easy to relapse, or it may be unsightly to leave a concave scar because of too deep burning. Therefore, it is usually recommended to perform cosmetic surgery and then sew it. After the wound heals, sticking a cosmetic tape for 3 months will leave a flat white linear scar. Although it is not perfect, most people can accept it. Girls can cover it with makeup, but remember that people with crab feet are not suitable for it.
People often ask me: Doctor, do you think my mole needs to be removed? My suggestion is that as long as you can check yourself regularly according to the five tips of ABCDE and make sure it is a benign mole, you don't have to remove it. As for moles that they think are harmful to beauty and fortune, the skin beauty center can provide appropriate treatment.