White spot
In juvenile cases. Manifested as light brown spots, clear, comparison rules; skin lesions often block of 1 to a few, will be gradually expanded, increased with age. Skin lesions greater than 1.5 cm in diameter, who number more than 6, may be associated with neurofibromatosis disease and other genetic diseases.
Pathological display increased epidermal melanin, basal layer of melanin cells increases.
Lentigines
Freckle, you are more familiar with, Brown and dark brown spotted to 1~2 cm, or slightly raised, round the edge rules, color uniformity. Lentigines on the occurrence of juvenile, gradually increasing with age, the number of General several to dozens of more dispersed distribution, occurring in any part.
Pathology shows increased number of basal layer of epidermis melanocytes, skin extends bursting, dermal papilla GM increase in melanoma cells.
Pigment spot
Refers to the larger than freckles, into small or large areas of black plaques on the surface of the skin. Some were discovered when a baby is born, while others are in the process of growing up gradually deepened before being found. Pigment spot only in surface layer of skin pigmentation. Skin lesions occurs in all areas of trunk for many, generally solitary, asymmetric, occurs in the middle line of the torso when skin lesions generally does not exceed.
Displayed as epidermal process of pathology extends, primary pigments increase, increase in melanoma cells, but they don\'t make nests, shallow spread GM melanocytes in leather.
Black pigmented Nevus
Also known as cell Nevus flammeus, categorized by organizational structure, can be mixed into intradermal Nevus, Junctional Nevus, Nevus 3 types. The latter two with canceration tendencies, should be noted.
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