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Medical Definition of Costomediastinal sinus
1. The recess of the pleural cavity between the costal cartilages and the mediastinum. Synonym: recessus costomediastinalis, costomediastinal sinus. (05 Mar 2000)
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1. The recess of the pleural cavity between the costal cartilages and the mediastinum. Synonym: recessus costomediastinalis, costomediastinal sinus. (05 Mar 2000)