Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The pacer seen in the left anterior chest wall with intact leads in appropriate position . Mitral valve replacement is noted . The lungs are well expanded . Opacities seen in the right mid lung , concerning for pneumonia . Opacity is seen in the left lung base has improved since prior . There is no pneumothorax . Trace left pleural effusion is present . There is no right pleural effusion . The cardiac silhouette is enlarged but is stable in size .
    OUTPUT:
    
Right midlung opacity consistent with pneumonia in the proper clinical setting . Recommend repeat after treatment to document resolution .