Melanoma

Melanoma is a common skin tumor caused by abnormal hyperplasia of melanocytes. It has a very high degree of malignancy and accounts for a large part of skin tumor deaths. Occurred in the skin or mucous membranes close to the skin, but also found in the pia mater and choroid. The incidence varies with race, region, and race. The incidence of whites is much higher than that of blacks. The incidence of whites living in Queensland, Australia, is as high as 17 / 100,000. Although China is a low incidence area of ​​melanoma, the incidence has been increasing in recent years.