There are three major types of skin cancer that people can have: 

• Basal Cell Carcinoma - Begins in the basal cells (a type of cell in the skin that creates new skin cells as old cells die).
• Squamous Cell Carcinoma - Common type of skin cancer that starts in the squamous cells that comprise the skin’s middle & outer layers.
• Melanoma - Melanoma, the most serious type of skin cancer, develops in the cells that produce melanin — the pigment that gives your skin its color.

Grade 1: Slow-growing or noncancerous. Grade 1 cancer cells appear similar to healthy cells, and can usually be cured with surgery.

Grade 2: Malignant but slow-growing. Grade 2 cells under a microscope look slightly abnormal. These tumors have the ability to spread to nearby tissues or come back after initial treatment.

Grade 3: Malignant and more quick-growing. When viewed at the microscopic level, the malignant cells show even more severe abnormalities. Can easily generate abnormal cells which can spread.

Grade 4: Develops rapidly and has various abnormal microscopic features. Grade 4’s timeline is aggressive, and the tumors can spread to other regions of the body.