PR MICHEL BRAUNER, ISM / SCIENCE PHOTO LIBRARY PR MICHEL BRAUNER, ISM / SCIENCE PHOTO LIBRARY
Lung abscess. Coloured X-ray of the chest of a patient showing an abscess (orange) in the right lung (at left). An abscess is an accumulation of puss within a cavity in tissue. It is usually as a result of an infection or other foreign material.
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