Cancer, melanoma means: Melanoma, cancer of the skin: It starts in cells
Melanocytes are cells that have the ability to grow in groups and form benign, not cancerous moles. Melanoma can manifest as a change in the size, shape or color of moles. If detected, it can be treated.
Early, and before metastasis spread to other parts. A biopsy is used to confirm diagnosis. Skin damage from the sun can result in melanoma.
(in Medical Dictionary)