Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is re- demonstration of moderate cardiomegaly with tortuous aortic arch . Atherosclerotic calcifications are noted within the arch . There is mild prominence of the pulmonary vasculature and trace edema . There is some increased density at the posterior base seen on lateral view only . There is no effusion or pneumothorax . The rib fractures identified on prior chest CT are not well evaluated on this study .
    OUTPUT:
    
1 . Mild facet congestion and trace edema . 2 . Some increased density compared to the prior at the posterior base on lateral view only which may represent atelectasis . Infection can not be excluded .