Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP semi-upright view of the chest was reviewed and compared to the prior study . There is improved aeration of the right lung after bronchoscopy . A known moderate right hydropneumothorax is visualized at the right lung apex ; however , it has decreased . Interstitial opacities in the left lung are unchanged and likely represent mild - to - moderate pulmonary edema . No left - sided pleural effusion . Cardiac and mediastinal contours are unchanged . Again , post - surgical changes are noted including scattered clips in the right upper hemithorax , surgical ___ along the right lateral hemithorax , median sternotomy wires that are aligned and intact , and several right rib defects as well as defects within medial portion of the right clavcle .
    OUTPUT:
    
1 . Improved aeration of the right lung status post bronchoscopy . Known moderate right hydropneumothorax has decreased in size . 2 . Left lung interstitial opacities consistent with mild - to - moderate pulmonary edema are unchanged .