ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Brain tumour. Magnetic resonance imaging (MRI) scans of axial sections through the chest of a 22-year-old patient, showing a tumorous lesion (dark patch) invading the right ventricle of the heart (large, centre of each scan). This tumour is suggestive of a lymphoma, a cancer of lymphocyte white blood cells.
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