Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Retrocardiac opacity with silhouetting of the left hemidiaphragm and lateral border of the descending aorta is nonspecific and could reflect any of a combination of atelectasis , focal pneumonia or even a small effusion . Right infrahilar opacity with slight indistinctness of the right heart border could reflect infection in the appropriate clinical scenario . Apparent elevation of the right hemidiaphragm may be related to positioning and technique versus volume loss . There is cardiomegaly , but no CHF . Aortic calcifications are present . No pneumothorax .
    OUTPUT:
    
1 . Nonspecific retrocardiac and right middle lobe opacities could reflect atelectasis and / or infection in the appropriate clinical situation . 2 . There is cardiomegaly without CHF .