Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker and wires are appropriate position . Moderate cardiomegaly is stable . There is a mild increase in interstitial markings which may represent mild pulmonary edema . There is a small left effusion . No definite focal consolidations . No pneumothorax .
    OUTPUT:
    
Mild pulmonary edema .