Monday, June 22, 2020

Is the black mole "cut" or "point"

Black moles or pigmented moles are congenital or acquired skin neoplasms that originate in melanocytes of the skin epidermis, and almost everyone has them. Because there are no conscious symptoms, few people pay more attention to black moles. Black moles can be divided into junctional moles, intradermal moles, and mixed moles from a pathological point of view. The former type has smooth surface, no hair growth, and is prone to malignant transformation after being stimulated; the latter two are slightly raised on the skin surface and can grow hair, generally No or very few changes. Through long-term clinical observation, the vast majority of human moles are intradermal moles, and most of them are benign. As long as they do not affect the appearance and appearance, and do not grow in areas that are often rubbed, they can coexist peacefully. However, once these black moles have changed, they may evolve into malignant melanoma.

There are many predisposing factors for the conversion of black moles to malignant melanoma. Among them, congenital moles are more prone to malignant. Junctional moles and mixed moles are more prone to malignant than intradermal moles, especially when they grow at the junction of skin and mucous membranes (such as oral cavity and anus) and long-term. Black moles on mechanically stimulating, easily rubbed parts (such as neck, waist, soles, palms, vulva) should be highly vigilant. In addition, factors such as long-term exposure to sunlight (ultraviolet rays), secondary viral infections or decreased immune function, and changes in hormones in women during menopause can induce malignant nevus. The latest statistics show that almost 60% of malignant melanomas are formed by the malignant transformation of black moles.

The formation of melanoma can be found early by visual observation, which can be distinguished from other malignant tumors. The malignant transformation of the black mole is a slow process, and there is aura before the malignant transformation. First of all, its growth rate is suddenly accelerated, obviously increased in a short time, the diameter is greater than 5 mm; the color is obviously darker than before, or changes from black to red, blue or yellow. The surface hairs are shedding, slightly bulging or thickening, with erosion, exudate, bleeding and scabs, and obvious inflammation. Secondly, there are irregular changes in the edges, black dots, radial black lines or satellite-shaped black circles around the skin, hard nodules in the center or periphery, and itching or burning pain. When the above symptoms appear in the mole, the patient should immediately consult a professional physician to get an early diagnosis. Because early detection and early treatment can save lives at a very low cost, it is the best way to cure malignant melanoma.

For the treatment of black moles, we advocate "cutting" rather than "pointing", that is, "surgical resection + pathological biopsy". Because "spot" moles (laser, freezing, cauterization, chemical corrosion) not only have the risk of causing infection, scarring, and recurrence, but can also induce malignant transformation due to adverse stimulation. In daily life, you should avoid touching and rubbing when washing your face, shaving your face, or taking a bath. You should not squeeze, pinch, pull, grab, or use scissors or wire strands to avoid adverse consequences.

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