Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . Minimal calcification in the aortic knob is noted . The lungs are clear of pulmonary consolidation , pleural effusion , or pneumothorax . Mild prominence of interstitial markings suggests mild interstitial pulmonary edema .
    OUTPUT:
    
Mild interstitial pulmonary edema . No evidence of pneumonia .