Moles and nevus are benign melanocyte hyperplasia, which can be congenital or acquired. As age increases, the number of moles and moles will increase; melanoma can be primary, or it can gradually evolve from moles or moles, and can grow anywhere on the skin, including the face, trunk and limbs. wait. Different from moles or moles, melanomas are irregular in shape and have unclear borders. They may be brown, black, white, blue, red, gray and other colors, and may even cause itching, bleeding, ulcers, etc.
Divided into 4 types
Melanoma is divided into 4 types. The first type is “malignant sunspot type”, which is not as round as ordinary sunspots or sun spots, has unclear borders, and is not as uniform in color as ordinary sunspots; the second type is “superficial sunspot type”. “Shallow diffuse type”, which mainly grows horizontally and comes in different colors, including blue and black; the third type is “nodular type”, which is nodular in shape and can invade into deeper layers of the skin; and the last type is “acral type” “type” is common in Asians and mainly grows on the palms of the hands, soles, fingers and toes. There are also some non-pigmented melanomas, which are relatively rare melanomas. Liu Yanming said, “It is recommended to pay more attention to the palms and soles of your hands and seek medical advice immediately if any abnormalities occur.”
How to identify melanoma?
Moles are asymmetrical up and down or left and right
The edges of moles are irregular and have no obvious borders.
The color of moles is uneven and comes in many colors
Diameter Diameter: greater than 6 mm
Moles change rapidly, such as shape change, enlargement, bulge, or even itching, pain, ulcers, bleeding, etc. on the surface
Early surgical resection is possible
Melanoma is one of the more dangerous types of skin cancer. Liu Yanming emphasized that it can spread to other parts of the body through blood and lymph. “Doctors usually use a dermoscope to identify suspicious areas of moles and moles. If there is any suspicion, a skin biopsy is required to determine whether it is melanoma.”
Doctors generally recommend removing early-stage melanoma together with the surrounding skin. Because melanoma may have invaded places that are difficult to detect with the naked eye, the range of removal will be larger. If melanoma has spread to lymphocytes or other places via the blood, other treatments may be required, such as chemotherapy, electrotherapy, targeted therapy, and immunotherapy.
Use daily sun protection
Studies have pointed out in the past that 80% of skin cancer can be prevented through sun protection measures. Liu Yanming reminded that it is best to develop sun protection habits from childhood, and to avoid exposure to the sun or outdoor sports between 11 a.m. and 3 p.m. “If you want to do outdoor activities When exercising, remember to wear sunscreen, wear long-sleeved shirts and pants, and a sun hat, and use an umbrella if necessary.”
When using sunscreen, it is best to choose a sunscreen product that can protect against UVA and UVB, preferably SPF30 or above and PA+++. Remember to reapply sunscreen during outdoor activities, and avoid using sunlamps to get dark skin.