Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are poorly inflated . There has been significant interval improvement of interstitial markings and hilar prominence compared with prior exam . A left - sided pleural effusion , better seen in the lateral view , appears significantly improved compared with prior exam . There is no pneumothorax . The cardiomediastinal and hilar contours are unremarkable with the exception of mild aortic tortuosity as well as stable moderate cardiomegaly . Sternotomy wires are intact . Post CABG ring markers and pacer leads are noted .
    OUTPUT:
    
Substantial interval improvement of post CABG pulmonary vascular congestion and left - sided pleural effusion .