Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Left sided pacemaker leads end in the right atrium and right ventricle in appropriate and unchanged position . Cardiomediastinal and hilar contours are stable . There has been increase in pulmonary vascular congestion compared to prior study with mild to moderate interstitial pulmonary edema . Retrocardiac opacity may indicate pneumonia in the appropriate clinical setting .
    OUTPUT:
    
Mild to moderate interstitial pulmonary edema . Retrocardiac opacity may indicate pneumonia in the appropriate clinical setting . Recommend reassessment after diuresis .