The difference between black moles and moles

Some people call the small black bumps on the skin black freckles, while others call them black moles. So what is the difference between black freckles and black moles? In fact, in many areas, moles and nevi are the same thing. They are a phenomenon of melanin deposition on the skin. Generally, there will be no lesions and most of them are benign. If the mole becomes larger or causes pain, you should go to the hospital for examination and treatment in time. It is best to use laser surgery to remove it.

1. The difference between melanin nevus and mole

1. Asymmetry

The two halves of a mole are symmetrical, while the two halves of a malignant melanoma are asymmetrical. The edges of ordinary moles are smooth and clearly demarcated from the surrounding skin, while the edges of malignant melanomas are irregular and jagged.

2. Size

The diameter of an ordinary mole is generally less than 5 mm, while the diameter of a malignant melanoma is larger than 5 mm. If the "mole" you see feels relatively large, you should be alert.

3. Color Difference

Common moles are usually tan, brown, or black, while malignant melanomas are tan or brown with pink, white, blue, or black. Among them, blue is the most ominous, while white indicates that the tumor will spontaneously degenerate. Nodular melanomas are always bluish black or gray.

4. Press

Press to see if you feel any pain. If so, it could be melanoma.

2. Melanoma-prone groups

1. Generally speaking, people with fair skin are more likely to develop melanoma than people with dark skin.

2. Moles that grow in areas of friction and pressure are also prone to malignant changes, such as on the palms, soles and heels, fingers and toes. 3. How to treat melanoma

For those suspected of having malignant melanoma, the patient should be informed that the lesion together with the surrounding 0.5 cm to 1 cm of normal skin and subcutaneous fat should be removed in one piece and sent for pathological examination. If it is confirmed to be malignant melanoma, the decision on whether additional extensive resection is needed should be made based on the depth of infiltration and the possible type and location of the melanoma. However, incisional or forceps biopsy is generally not performed unless the pigmented nevus lesion has already ulcerated, or the lesion is so large that a one-time removal may cause disfigurement or disability. In this case, pathological confirmation may be considered first, but the incisional biopsy must be connected with radical surgery as close as possible.