Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No evidence of free air is seen beneath the diaphragms . Mild basilar atelectasis is seen . No large pleural effusion is seen , although a trace right pleural effusion be difficult to exclude . Cardiac silhouette is top - normal to mildly enlarged . Aortic knob is calcified . No focal consolidation is seen .
    OUTPUT:
    
No evidence of free air beneath the diaphragms .