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Definition of Mediastinum
Mediastinum: The area between the lungs. The organs in this area include the heart and its large veins and arteries, the trachea, the esophagus, the bronchi, and lymph nodes.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=4313
Last Editorial Review: 3/26/1998 2:27:00 PM
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