Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the heart is demonstrated . Minimal atherosclerotic calcifications are noted at the aortic knob . Mild pulmonary edema is demonstrated without pleural effusion . No pneumothorax is identified . Minimal atelectasis is seen in the lung bases , without focal consolidation . Degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema .