AAD Skin Cancer Screening Guidelines

Overview / Definition Skin cancer screening involves the systematic examination of the skin to identify suspicious lesions that may indicate the presence of skin cancer. The primary types of skin cancer include melanoma, basal cell carcinoma (BCC), and squamous cell carcinoma (SCC). Early detection through screening is crucial, as it significantly improves treatment outcomes and survival rates. Epidemiology Skin cancer is the most common form of cancer in the United States, with millions of cases reported annually. Key epidemiological factors include: Melanoma: Approximately 1 in 38 men and 1 in 58 women will be diagnosed in their lifetime. Basal Cell Carcinoma: Over 4 million cases are diagnosed each year. Squamous Cell Carcinoma: Approximately 1 million cases are diagnosed annually. The incidence of skin cancer has been steadily increasing, particularly among individuals with fair skin, those with a history of sunburns, and immunocompromised patients. Pathophysiology / Mechanism Skin cancer arises from the uncontrolled proliferation of skin cells due to genetic mutations, typically caused by ultraviolet (UV) radiation exposure. The mechanisms include: UV Radiation: Causes DNA damage leading to mutations. Genetic Factors: Family history and inherited syndromes, such as nevoid basal cell carcinoma syndrome. Immune Suppression: Increased risk in transplant recipients and those with autoimmune diseases. Clinical Presentation The clinical presentation varies by type of skin cancer: Melanoma: New or changing moles, often asymmetrical with irregular borders and multiple colors. Basal Cell Carcinoma: Pearly nodules, often with telangiectasia or ulceration. Squamous Cell Carcinoma: Scaly red patches, open sores, or elevated growths that may crust. It is important to note that skin cancer can occur in non-sun-exposed areas, especially in immunocompromised individuals. Diagnosis / Workup Diagnosis of skin cancer typically involves: Physical Examination: Thorough skin examina