DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Radiotherapy burn on eye. The radiotherapy was to treat squamous cell carcinoma, cancer of the upper layer of skin cells. It accounts for about 20% of skin cancers, the other 80% being accounted for by basal cell carcinoma, cancer of a lower layer of skin cells. Despite being more rare than basal cell cancer, squamous cell cancer is more likely to spread (metastasise) to other areas of the body. It is mainly caused by long-term exposure to UV radiation from the sun. Treatment is usually by surgical excision of the cancer, chemotherapy and radiotherapy.
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