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Medical Definition of Hilar shadow
1. Radiographic hilum of the lung; a composite radiographic shadow of the central pulmonary arteries and veins, with associated bronchial walls and lymph nodes, within the right or left lung. (05 Mar 2000)
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1. Radiographic hilum of the lung; a composite radiographic shadow of the central pulmonary arteries and veins, with associated bronchial walls and lymph nodes, within the right or left lung. (05 Mar 2000)