RT Book, Section A1 Hardin, J. Matthew A2 Knoop, Kevin J. A2 Stack, Lawrence B. A2 Storrow, Alan B. A2 Thurman, R. Jason SR Print(0) ID 1181043978 T1 Squamous Cell Carcinoma T2 The Atlas of Emergency Medicine, 5e YR 2021 FD 2021 PB McGraw-Hill PP New York, NY SN 9781260134940 LK accessmedicine.mhmedical.com/content.aspx?aid=1181043978 RD 2024/03/28 AB Squamous cell carcinoma (SCC) is the 2nd most common skin cancer. It is associated with a higher incidence in males, increased age, chronic sun exposure, immunosuppressive treatment, and chronic burns or scars. Initially, SCC presents with erythematous macules that develop into firm papules and plaques. Most are located on the sun-exposed sites of the head, neck, and upper extremities, but can occur anywhere.