More skin cancer awareness. Test yourself!, I think for all of us dermatologists doing skin checks, amelanotic melanomas humble us the most. These are melanomas that dont have pigment, so they are Non melanoma skin cancer refers to a group of skin cancers that include basal cell and squamous cell carcinoma. They are less worrisome than melanoma, but still require treatment, left untreated, they Non melanoma skin cancer 'raises malignancy risk' GPonline Types of melanoma Skin Cancer: What Are the Causes of Nonmelanoma? How Can You Tell if It's Melanoma or Just a Mole?