Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes have decreased in the interim . Confluent left lower lung and retrocardiac opacity with air bronchograms , silhouetting of the lower aspect of the right heart border as well as the left hemidiaphragm is new . A left pleural effusion is small . The heart size is probably overall unchanged and moderately enlarged , even for this AP projection . Central pulmonary vessels are congested . Pulmonary edema is mild - to - moderate . No pneumothorax .
    OUTPUT:
    
Lower lung volumes with likely mild volume overload and / or heart failure as well as pneumonia given the provided history . Small left pleural effusion .