Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Cardiomegaly is noted . There is mild interstitial edema and subtle hilar congestion . No effusion or pneumothorax . No signs of pneumonia . Mediastinal contour is unchanged . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly and mild edema .