Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is moderately enlarged but increased compared to the prior exam . Aortic knob is calcified . There is mild interstitial pulmonary edema , new from the prior exam . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild interstitial pulmonary edema .