Melanoma is the deadliest form of skin cancer. You are less likely to develop melanoma than basal cell carcinoma or squamous cell carcinoma, but melanoma is more likely to spread to other parts of the body if left untreated.
Melanoma usually appears as darker colored moles and develop more dominantly in the trunk for males and extremities for women. Because melanoma is most treatable when caught early, you are encouraged to visit a dermatologist whenever any new moles develop, or existing ones begin to change in shape, size, or color.
