What is "melanoma" skin cancer?

What is "melanoma" skin cancer?

Malignant melanoma, which is the third most common skin cancer, is an abnormality of the growth of the pigment cells of the skin, called the melanocytes. It occurs in about fifty to sixty thousand cases per year in the United States, and of the three most common skin cancers is the one with the most significant possibility of metastasis. Therefore, it entails the greatest danger to our health. Malignant melanoma probably accounts for about ten to fifteen thousand deaths in the United States every year, which far outnumbers any of the other fatalities from any other form of skin cancer.