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Irradiation of the skin with 12 - 15 Gray or repeated irradiation with a smaller dose result in chronic radiodermatitis after two years or more. The skin is atrophic and shows telangiectasia due to dilation of a reduced skin vasculature. Pigmentation usually is reduced, but there may be small areas of increased pigment production and retention. Radionecrotic ulceration may occur, especially in moist areas.
Radiodermatitis, Chronic, Radiation Dermatitis, Chronic, X-Ray Dermatitis, Chronic