K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY
Miliary tuberculosis. Coloured 3D computed tomography (CT) scan of the lungs of a patient with miliary tuberculosis (TB), showing very thin micronodules uniformly distributed in the lung tissue. TB is caused by infection with Mycobacterium tuberculosis bacteria. Miliary (or disseminated) tuberculosis is a form of tuberculosis characterised by a wide dissemination into the human body and by the tiny size of the lesions seen in the lung tissue. Its name derives from the distinctive pattern seen on a chest X-ray such as this one, with many tiny spots distributed throughout the lung fields with the appearance similar to millet seeds; thus the term miliary tuberculosis.
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