Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomegaly is stable . Hilar congestion and mild interstitial pulmonary edema are noted . No convincing signs of pneumonia . No large pleural effusion . No pneumothorax . Mediastinal contours are stable with atherosclerotic calcifications at the aortic knob . The bony structures appear intact .
    OUTPUT:
    
Hilar congestion and mild interstitial pulmonary edema . No pneumonia .