Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . Moderate cardiomegaly and moderate central pulmonary vascular congestion are again noted . An increasingly confluent right lower lobe airspace opacity is worrisome for developing pneumonia . The upper lungs are clear bilaterally . No evidence of large pneumothorax . Probable small right and trace left pleural effusions .
    OUTPUT:
    
1 . Increased slightly confluent right lower lobe airspace opacities worrisome for developing pneumonia . Probable small bilateral pleural effusions . 2 . Persistent , moderate cardiomegaly and moderate central pulmonary vascular congestion .