SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY
Lung cancer. Coloured chest X-ray of a 50 year old woman with cancer (orange) in one of her lungs. The lungs are at left and right of centre (lung at left is white) surrounded by the ribcage, with the bones of the spine between them. The woman had a history of tobacco smoking. Smokers have a much greater risk of developing lung cancer, and the risk increases the earlier in life they started smoking and with the more cigarettes they smoke. Lung cancer may also be caused by atmospheric pollution or the inhalation of asbestos. Treatment includes radiotherapy, chemotherapy and the surgical removal of the whole or part of a lung.
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