Fact Sheets

Basal Cell Carcinoma (BCC)
Basal cell carcinoma accounts for 80 percent of all skin cancers. The cause is damage to the DNA of cells in the epidermis, the top layer of the skin.
Actinic Keratosis (AK)
Actinic keratosis (AK) is a scaly and rough patch of skin caused by years of sun damage. Learn about symptoms and treatment.
Mohs Surgery for Skin Cancer
Mohs surgery is a type of surgery for skin cancer that minimizes the amount of skin removed. Learn more about this procedure.
Squamous Cell Carcinoma
Squamous cell carcinoma is a cancer in the middle and outer skin layers caused by ultraviolet (UV) exposure. Learn about symptoms and treatment.
Melanocytic Nevi (Moles)
Melanocytic nevus is the medical term for moles. They can develop on any part of the body and in most cases, they don't require treatment.
Melanoma
Melanoma is a type of skin cancer that forms in the cells that produce skin color. Learn about symptoms and treatment.
Cancer
Whether for screenings, diagnosis, or treatment for yourself or someone you care about, Yale Cancer Center offers multidisciplinary care.
Brachial Plexus Surgery
Though it’s possible to injure your brachial plexus without even knowing you did so, the consequences can include temporary numbness to your arm, pain, loss of sensation or even paralysis.
Pediatric Cancer Immunotherapy
Immune therapy is a cancer treatment approach that uses the body’s own immune system to attack cancer cells. Learn more about this treatment.
Photoaging (Sun Damage)
Photoaging is when the sun prematurely—and sometimes dangerously—ages the skin. Learn about symptoms and treatment.