A malignant growth or tumor on the skin that tends to grow and spread. It often crusts and bleeds, but does not heal or go away completely. It may begin as a pink or red crusted area.
Malignant melanoma is the most serious of skin cancers.
It usually begins as a light brown or flat, black spot with irregular borders that later can become red, blue or white. It may start in an existing mole or as a new flat freckle with irregular borders. One out of every five Americans will develop some form of skin cancer in their lifetime. Skin cancer is the most common type of cancer. Half of all cancers diagnosed is skin cancer.