How does mole form

Update Date: 2025-08-11 Source: Network

summary

Pigmented nevus and pigmented spots are called pigmented nevus, which belongs to localized pigmented lesions. Pigmented spot, also known as non cellular pigmented nevus, is pigmentation of the skin, without tumor cells, such as freckles, age spots, etc.; different from pigmented spot, pigmented nevus is nevus cell proliferation, so it is also known as cellular nevus. Clinically, it is difficult to distinguish between pigmented spots and nevus. Nevus cells in nevus are derived from neural crest precursor cells, which can produce pigment. Nevus is a benign disease, which maintains a stable state for a long time. Pigmented nevus often occurs in the face and neck skin, occasionally also in the oral mucosa. How does mole form tell everybody.

How does mole form

First, intradermal nevus is differentiated from large nevus cells, which tend to be more mature small nevus cells and enter the dermis and its surrounding connective tissue.

Second, the cells of nevus junctions exist at the junction of epidermis and dermis, presenting multiple nests with clear boundary and uniform distribution distance; the upper half of each nest is in the bottom layer of epidermis, and the lower half is in the superficial layer of dermis. These nevus cells are large nevus cells with deep pigmentation.

Third: compound nevus is a mixed form of the above-mentioned vehicle type nevus, which often has intradermal nevus and residual border nevus in the process of nevus cells entering the dermis.

matters needing attention

Generally, there is no need for treatment. But for some malignant nevus, we need to pay attention to it, so as not to induce its malignant transformation. If the nevus increases rapidly in a short period of time, its color deepens and turns black, its edge is red and irregular, its surface is bleeding and damaged, and there are satellite like damages around, it indicates that the nevus has signs of malignant transformation, and it should be correctly removed, that is, timely hospital examination to prevent canceration.