👉 Melanoma is a type of cancer that occurs in skin cells, typically affecting the skin, legs, and sometimes other parts of the body. It starts as a small, brown or black cell growth called a melanocyte. As it grows, it can spread to surrounding tissues and grow into a tumor. Melanomas are more common in people with a family history of skin cancer, but they can also occur outside the family due to environmental factors such as exposure to sunlight or certain chemicals. Treatment