Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP supine and lateral views of the chest provided . Cardiomegaly is mild and unchanged . There is hilar congestion and mild interstitial edema . No supine evidence for effusion or pneumothorax . Mediastinal contour is unchanged . Bony structures are intact .
    OUTPUT:
    
Mild interstitial edema and mild cardiomegaly .