Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable with severe cardiomegaly . There is no pleural effusion or pneumothorax . Lungs are well - expanded . Mild pulmonary edema is slightly worsened compared to the prior study . A more confluent opacity at the right lung base may indicate developing pneumonia in the correct clinical setting . A left pectoral single lead pacemaker is present with tip terminating in the right ventricle as expected .
    OUTPUT:
    
1 . New right lower lobe opacity concerning for developing pneumonia in the correct clinical setting . 2 . Mild pulmonary edema is slightly worse than the prior study .