CENTRE JEAN PERRIN, ISM / SCIENCE PHOTO LIBRARY CENTRE JEAN PERRIN, ISM / SCIENCE PHOTO LIBRARY
Lung cancer. Combined coloured computed tomography (CT) and positron emission tomography (PET) scan of an axial section through a patient's chest, showing squamous-cell carcinoma (SCC, bright) in the right lung (left), which has caused central tissue death (necrosis) and mediastinal lymphadenopathy (enlargement of the mediastinal lymph nodes).
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