ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Thickened skull. Coloured magnetic resonance imaging (MRI) scan of an axial section through the head of a 22-year-old patient, showing thickening of the trabecular (spongy) bone of the skull. This condition is suggestive of a blood disorder such as thalassemia or sickle-cell disease.
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