TY - CHAP M1 - Book, Section TI - Radiation Therapy A1 - Samuels, Stuart E. A1 - Freedman, Laura A1 - Wolfson, Aaron H. A2 - Nouri, Keyvan Y1 - 2023 N1 - T2 - Skin Cancer: A Comprehensive Guide AB - SUMMARYRadiation is an effective nonsurgical therapy that provides long-term disease control and a cure for squamous cell and basal cell skin cancer. Typically used radiation modalities include low-energy x-rays, brachytherapy, and electrons with a bolus, which target superficial skin and minimize doses to deeper normal tissues.Radiation can be used for small tumors on the face with excellent cosmesis. Nonsurgical patients with nonmelanoma skin cancers can also be treated with radiation.Radiation is recommended as adjuvant treatment in patients with high-risk features, such as large tumor size, deeply invasive disease, incomplete excision, high-grade lesions, perineural invasion, lymphovascular invasion, and immunosuppression, as well as cases of lymph node involvement.The role of radiation therapy (RT) in melanoma is decreasing because of the increased use and efficacy of targeted agents and immunotherapy. Adjuvant radiation should be used for high-risk features such as desmoplastic disease, bulky disease, multiple lymph nodes, and extracapsular extension. Hypofractionation should be considered, depending on the site of disease.Radiation also has a role in the management of Merkel cell carcinoma, primary cutaneous lymphoma, cutaneous angiosarcoma, Kaposi sarcoma, and extramammary Paget disease. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/18 UR - dermatology.mhmedical.com/content.aspx?aid=1194728213 ER -