Ionizing radiation therapy in dermatology.

The introduction of new surgical techniques and other therapeutic modalities has markedly influenced the use of ionizing radiation therapy in dermatology. X-rays and electron beams are now used only for a limited number of indications in carefully selected patients. Since surgical approaches have gained popularity in the treatment of skin tumors, not all dermatologists are familiar with the benefits of ionizing radiation for patients with cutaneous neoplasms and certain other skin disorders. This article reviews modern indications for radiation therapy in dermatology. Important physical and biologic factors, radiation side effects, radiation protection measures, and therapeutic results will also be discussed. Although the use of radiotherapy in dermatology has in large part been supplanted in recent years by other forms of treatment, ionizing radiation continues to be an essential therapeutic alternative for many cutaneous tumors and some skin diseases. It is important to be familiar with the principles of radiotherapy so that optimal therapy can be selected for individual patients.