Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP view upright radiograph demonstrate hazy opacity projecting over the right lower lung zone with cephalization of vessels and prominent peripheral interstitial markings . Heart is enlarged . Findings are consistent with pulmonary edema , mild to moderate . No large pleural effusion is identified . There is no pneumothorax . A left chest pacer defibrillator is identified , its leads which appear in unchanged position relative to prior study dated ___ . Osseous structures are without acute abnormality .
    OUTPUT:
    
Cardiomegaly with moderate pulmonary edema .