Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Left - sided pacemaker is in appropriate position . There are low lung volumes . Mildly increased parenchymal opacities bilaterally may indicate mild pulmonary edema . No pleural effusions or pneumothorax . The cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
Mild pulmonary edema , slightly increased from prior study .