ANDRE LABBE, ISM / SCIENCE PHOTO LIBRARY ANDRE LABBE, ISM / SCIENCE PHOTO LIBRARY
Hodgkin's disease and mediastinum. Frontal chest X-ray of the heart and lungs of a 16-year-old patient, showing the effect of Hodgkin's disease on upper part of the mediastinum, the central part of the chest cavity between the lungs. An abnormal protruding mass is at upper left. Hodgkin's disease, also called lymphadenoma or Hodgkin's lymphoma, is a malignant (cancerous) tumor (neoplasm) that develops in the lymphoreticular system. It arises from white blood cells known as lymphocytes.
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