Melanin plays an important role in the pigmentation of the skin and also determines what our skin color should be. Melanoma is a type of cancer that causes abnormal proliferation of the melanocytes in the skin.This type of cancer is more dangerous than people think. Melanoma can spread very quickly to other organs and cause more complications. It is responsible for several deaths in the United States every year.

It is possible for a person to have one or more types of melanoma at the same time. In most causes one type would have led to the other. There are many types of skin cancers and there are four types of melanoma. A person can have one or more types of melanoma from the ones mentioned below.

The superficial spreading melanoma is the most common type of all. It accounts to nearly 70 percent of the skin cancers existent. In this type the cancer remains in the top most layer of the skin and spreads rapidly all over the body. It gets deeper into the skin much later.

The acral lentiginous melanoma also spreads on the top most layers before getting deeper into the skin. It is the most common type of melanoma to affect Africans and Asians.

Lentigo maligna stays on the surface of the skin for a long time before spreading into the internal organs.

Nodular melanoma is a type of cancer that comes as a bump and the affects the internal organs directly.

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