SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Sarcoidosis. Frontal chest X-ray of the lungs of a 25-year-old woman with pulmonary sarcoidosis. Affected lung tissue shows up as opaque white patches. Also known as Boeck's disease, this is a chronic inflammation of the lymph nodes or organs. It causes multiple granulomas (nodular growths), which are similar to tuberculosis. The disease has no known cause. Medical intervention is not always necessary, but if it is needed it is in the form of corticosteroid drugs. The ribs (blue), spine (down centre) and the heart (lower right of spine) are also seen.
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