The classification and treatment of nevus cosmetology refers to the use of various minimally invasive techniques in the process of wound repair to maximize the satisfactory cosmetic effect after operation. With the development of society and the improvement of people's living standards, people's expectations for the effect of plastic surgery, especially head and face plastic surgery, are constantly improving, which is a test for plastic surgeons. Only through strict formal training and mastering all kinds of minimally invasive techniques can we calmly cope with this challenge. Taking the operation of nevus as an example, our department treats thousands of patients with nevus every year, with facial and neck nevus being the most common. They come in different sizes. Facial nevus can be treated by high-frequency beauty instrument or laser, and there are many surgical treatments, such as direct excision and cosmetic suture, fractional excision, skin expansion and flap transfer and repair. In other operations, large needle thick thread suture will leave obvious eye scar and suture scar on the skin, similar to "centipede foot" However, micro-needle thread for cosmetic suture, imported non-invasive suture thread for subcutaneous tissue suture and hair thread for skin suture can be absorbed. In the aspect of suture technology, the subcutaneous tissue is removed in a trapezoidal way, so that the tension during suture is mainly distributed in the subcutaneous layer, while the skin layer is healed without tension, and the scar after operation is small and flat. During the whole operation, we should strictly follow the exquisite and meticulous operation style, and if possible, we can perform the operation under a magnifying glass in order to exchange the least tissue trauma for the most satisfactory operation effect. Plastic surgeons must have a high aesthetic angle and master all kinds of minimally invasive techniques in order to achieve good cosmetic results. What is a mole? Will it become skin cancer? Nevus are benign tumors on the body surface. According to pathological classification, nevus can be divided into three types: (1) borderline nevus: located at the junction of epidermis and dermis. More common in palms, soles, lips and external genitalia. The surface is flat or slightly high, with the size of 1-2 mm, and it is light brown, brown-black or blue-black. There is the possibility of canceration, and melanoma can appear. (2) intradermal nevus: It exists in the dermis. The surface is smooth and the boundary is clear. More than 1mm, the growth is flaky, flat or slightly convex. The color is dark and uniform, with light brown, dark brown or dark black. Cancer does not usually occur. (3) mixed mole: It is a mixture of the above two, generally like intradermal nevus, and it can also become cancerous due to the composition of borderline nevus. Everyone has moles, but which moles are easy to become cancerous? What is the sign of the evolution from common nevus to melanoma cancer? If the mole suddenly increases in a short period of time, it will quickly form a raised nodule and the color will deepen, so be alert. The nevus keeps expanding outward, the boundary is blurred, and even pseudopodia appears. When it expands to a certain extent, papillary hyperplasia or rupture occurs, forming a small ulcer (often in the shape of a fire spout). The surface is easy to bleed, ooze or be covered with blood scabs, and black spots, black halos or pigment nodules often appear around it. The regional lymph nodes near the nevus are often swollen and palpable. At the same time, patients feel local itching and burning pain. If these changes occur in the body, you should seek medical advice immediately, preferably by biopsy. What kind of mole should I go to, and the younger the better? Most moles on the face or other parts of the body are benign, and you can "live in peace" with your owner without any treatment. But some moles need treatment. 1) The size of a super-large mole can sometimes predict whether it will cause trouble in the future. Studies have shown that larger moles are more likely to become malignant than smaller moles (except giant moles). 2) It is more likely that the mole that is easy to get will become a malignant mole. For example, pigmented nevus that grows on the hands and feet, neck, armpit, chest, head, back, genitals and other easily worn parts has a high probability of malignant transformation, so it must be observed regularly or removed directly to prevent malignant transformation and metastasis. 3) Sunlight or ultraviolet radiation may increase the chance of mole change, so it is best to remove moles from the parts that are obviously exposed for a long time. 4) The nevus growing on the soles of limbs is the most common part of melanoma. According to medical statistics, special attention should be paid to moles at the ends of limbs, such as those under fingers or nails. Most malignant melanoma in the East occurs in hands and feet. Therefore, if you find that the moles on your palms and soles grow abnormally fast, you must seek medical attention as soon as possible. 5) Unstable nevus is painful, itchy and discolored. 6) Congenital nevus People born with nevus are much more at risk of cancer than those born with nevus. In order to nip in the bud, experts suggest that people over 40 should do a self-examination once a month: take off all their clothes, hold a small mirror in front of the full-length mirror, and check the moles on the whole skin, especially if there are any newly discovered moles. Melanoma is characterized by irregular edges and irregular twists and turns; Not all black, but variegated and intertwined; At first, it is small and imperceptible, but it will gradually get bigger. A normal mole is neat and uniform black or dark brown, and it is easy to divide it into two symmetrical parts with a straight line. If melanoma can be found early, it can be completely removed under local anesthesia without worries. If it is a congenital giant nevus, it needs early treatment. There are several main reasons: ① the nevus cells of congenital giant nevus will migrate from superficial skin tissue to deep layer with age, so the younger the age, the shallower the location of nevus cells and the better the treatment effect; The older you get, the more nevus cells will penetrate into the deep tissue of the skin, and the more tissue you need to remove during treatment, the greater the loss. ② The absolute area of most patients with congenital nevus will increase with age, so the area to be removed will also increase with age, which increases the difficulty of treatment and reduces the effect of treatment. ③ Nevus are benign lesions with a very stable natural course. Malignant transformation is extremely rare in the course of nevus. However, the malignant rate of congenital giant nevus is high, which is 1% ~ 20% in domestic scholars and 1.2% ~ 42% in foreign scholars. No matter which specific data is accurate, in short, congenital nevus must be treated as early as possible to prevent malignant transformation. There are many ways to remove moles now. Which is better? The operation to remove moles can be different according to the size of moles. Small nevus (the size of rice grain) is best treated with medical Dot mole machine (carbon dioxide laser or high-frequency beauty instrument). Large moles (the size of peanuts) need to be removed and sutured by plastic surgery. At present, the methods to remove moles usually include chemical corrosion, electrocautery, freezing, laser and cosmetic surgery. If the cut mole is suspected to be malignant, it is best to send it for pathological examination to determine whether there is malignant change. If it is diagnosed as malignant black tumor by doctors, further comprehensive treatment is needed. What should Dot mole pay attention to in the future? Just after laser mole removal, there will be scabs locally, so we should pay attention to avoid local infection. Try not to touch water for the first two days. You can wash your face later, but you should wash it immediately after washing, and pay attention to avoid the sun. Generally, after one week, the scab on the surface can naturally fall off. Don't remove the scab yourself, or you will easily leave a scar. The best seasons to choose are spring and autumn. It is hot in summer, so it is easy to sweat and the wound is more susceptible to infection. Can a particularly large mole or hairy mole be eradicated? What can we do? In particular, large moles and hairy moles are difficult to treat and can be eradicated, but they often leave scars. It can be determined according to the location, size and type of the mole. Ota nevus can be removed by laser, and some nevus can be removed by stages. The skin defect formed after excision of large nevus can be repaired by plastic surgery techniques such as skin grafting, skin flap and skin expansion, and it needs to be treated in plastic surgery in regular hospitals. Respondents: f 779 17- Jinshi origin grade 812-1320:13-. With high-frequency electroacupuncture, the cost is only 20-60 yuan, and large moles need surgical treatment. Surgery needs to be scheduled and the cost is not high. You can try the traditional therapy at home: in addition to the moles on your face, mix fresh lime and soda ash 1 0g each and add a little alcohol, and apply1time every day. After 7 days, the mole disappeared. Many people have moles, some people don't care, some people worry. Do you want to remove these moles? If you want to go, how will you go? Nevus are composed of melanocytes located at the junction of epidermis and dermis. Because the number of nevus cells is different, it can be higher than the skin surface, flush with the skin, different in size and location, and can grow after it grows. There is no scientific basis for the folk saying that there is a mother-child mole. Because it is difficult to judge the depth of the mole from its appearance, you have to be careful to get rid of it. The so-called disposable potion Dot mole method introduced by some beauty salons is risky. Although shallow moles can be removed, the epidermis is very thin, and it is easy to remove the whole epidermis with a little carelessness, leaving a scar, and it is permanent, unlike the scar spirit mentioned in the advertisement. But if the mole is deep, it is not easy to remove it by the above methods, and it will grow back or even bigger when it is finished. As a result, there are scars and lingering moles, which are even more ugly. More seriously, if the nevus is repeatedly stimulated or infected, it is easy to induce malignant transformation and become a highly malignant tumor. Of course, moles are not inevitable, and moles above the skin surface can be removed by freezing, surgery or laser. These methods also have the risk of leaving scars. Now there is a kind of laser emitted from precious stones. Use it to irradiate the place with moles to a certain energy, and the moles will explode like hot air balloons. We call it biological detonation therapy. Cells or pigment particles will become tiny fragments, which will be removed by the tissues and cells of the body, making the color gradually fade or disappear. Although this method does not damage the epidermis, there is little chance of leaving scars, but it should be done several times or a dozen times, with an interval of more than three months each time. The whole treatment takes a long time and costs a lot. Moles that need to be vigilant and cleared are generally rare, but if the skin is relatively white and often exposed to the sun outside, it will increase the chance of malignant transformation. There are also some signs of malignant transformation of moles: for example, moles suddenly become larger, the color deepens, there is itching or pain, or ulcers appear locally, or small moles grow around moles. These are all bad phenomena, so you should go to the hospital as soon as possible. For example, moles on palms and soles of feet increase the chance of malignant transformation due to frequent friction, and should also be removed as soon as possible. However, it is best to do a pathological examination before removing the mole and observe whether there are malignant cells under the microscope. If there are no malignant cells, they can be surgically removed. If there are signs of malignant cells, extensive cleaning surgery and other treatments should be carried out.