Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size remains mildly enlarged , and likely accentuated due to low lung volumes . Mitral annular calcifications are noted . Mediastinal and hilar contours are unremarkable . Mild no frank pulmonary edema is seen , there is crowding of the bronchovascular structures with probable mild pulmonary vascular congestion . Streaky bibasilar airspace opacities could reflect atelectasis or chronic changes . No pleural effusion or pneumothorax is identified . Hardware seen within the right proximal humerus .
    OUTPUT:
    
Low lung volumes . Probable mild pulmonary vascular congestion , similar compared to the prior exam . Streaky bibasilar airspace opacities could reflect atelectasis or chronic changes .