Melanoma is a less common, but far more dangerous form of skin cancer. Seventy-five percent of skin cancer related deaths are attributed to melanoma. It can spread quickly to other parts of the body through either the blood or the lymph system. Melanoma often start as mole-like growths which change in size, shape or color, or ooze or bleed. One half of the mole is shaped differently than the other half.
B is for border.
The borders of the mole are ragged, blurred or notched. C is for color. The pigmentation is uneven or a deep black. D is for a diameter which exceeds six millimeters. The two main treatments for basal cell and squamos cell cancer are surgery and radiation therapy.