Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears mildly enlarged . The aortic arch is calcified . There is a mild - to - moderate interstitial abnormality most consistent with congestive heart failure . Lung volumes are low . There is no pleural effusion or pneumothorax . Bony structures are unremarkable aside from mild degenerative changes at the thoracolumbar junction .
    OUTPUT:
    
Findings suggesting mild - to - moderate interstitial pulmonary edema .