Types of Skin Cancer
cancer is a malignant tumor develops from the tissue of the skin. There are several types of skin cancer, named
depending on the group of cells affected: squamous or non-melanomas and melanomas.
Melanoma is a cancer that
forms in a group of cells called melanocytes. They produce melanin, and are found in the skin, eyes, inner ear
and the meninges. Unlike other type of skin cancer, melanoma tends to grow quickly, and can be fatal. In fact,
it is the most dangerous form of skin cancer. Melanoma is responsible for nearly 75% of deaths from skin
Carcinomas are composed of
two main types of skin cancers: basal cell carcinoma and squamous cell carcinoma. They are the two most common
forms of non-melanoma, representing more than 80% of skin cancers. Basal cell carcinoma is the most common.
Squamous cell carcinomas are rare; they are often the result of metastatic cancer cells that have spread beyond the
In general, the evolution
of basal cell carcinoma and squamous cell carcinoma is slow and rarely fatal. They occur most often in people
aged over 50 years.
Other non-melanomas - although rare, the following are other types of
- sebaceous glands