Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Mild - to - moderate cardiomegaly is slightly bigger . There is a left - sided pacemaker with leads in appropriate position . Sternotomy wires are intact . There are bilateral interstitial opacities consistent with mild interstitial pulmonary edema . No focal consolidation , pleural effusion , or pneumothorax . The mediastinal and hilar contours are stable .
    OUTPUT:
    
Mild interstitial pulmonary edema .