PR. M. BRAUNER / SCIENCE PHOTO LIBRARY PR. M. BRAUNER / SCIENCE PHOTO LIBRARY
Lung cancer. Coloured X-ray of the lungs of a woman suffering from bronchoalveolar cancer, a type of lung cancer. The orange mass (centre left) in the right lung is a tumour. Bronchoalveolar cancer is a subtype of adenocarcinoma and is the predominant lung cancer in women. It occurs when mucus-secreting cells in the lung mutate, usually caused by the effects of cigarette smoke. This type of lung cancer usually develops slowly with no symptoms. It is also slow to spread (metastasise), and most often only spreads to the brain. If caught early, treatment is with surgical removal of all or part of the lung, followed by chemotherapy and radiation. However, prognosis is still poor.
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