What is the difference between melanoma and mole?

Melanoma and mole are similar in appearance, but in fact one is a malignant tumor and the other is a normal mole, so it is necessary to make the correct distinction. If it is melanoma, it must be treated actively.

1. Edge: The edge of a mole is smooth and clearly demarcated from the surrounding skin; while the edge of a malignant melanoma is irregular and serrated. In addition, the surface is rough with scaly or flaky desquamation, sometimes with exudate or bleeding, and the lesions are higher than the skin.

2. Diameter: The diameter of a mole is generally less than 5 mm, while the diameter of a malignant melanoma is greater than 5 mm.

3. Asymmetry: The two halves of a mole are symmetrical, while the two halves of a malignant melanoma are asymmetrical.

4. Color: Moles are usually brown, brown or black; while malignant melanomas are brown or tan with a mixture of pink, white, blue and 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.

5. Other symptoms : Pay special attention to moles that are itchy or painful when pressed. If such moles continue to develop, they are likely to become ulcerative lesions, and the stinging or burning pain will become more obvious. Satellite nodules may also appear around them or regional lymph node enlargement may occur, indicating that the disease has progressed to the late stage.