Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mild to moderately enlarged . Mediastinal and hilar contours are unremarkable . Increased interstitial opacities bilaterally suggests mild pulmonary edema . More focal opacity in the right lung base could reflect atelectasis or infection , and there is and associated small to moderate right pleural effusion , for which a sub pulmonic component may account for the elevation of the right hemidiaphragm . No pneumothorax is present . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild pulmonary edema and small right pleural effusion . More focal opacity in the right lung base may reflect atelectasis but pneumonia is not excluded . Elevation of the right hemidiaphragm is of unknown chronicity and may partially be attributable to a subpulmonic component of the pleural effusion , but underlying subdiaphragmatic / hepatic process is not excluded .