Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild cardiomegaly . The mediastinal contours are stable , with a mildly tortuous thoracic aorta . The lungs are well expanded and clear of pulmonary consolidation , pleural effusion and pneumothorax . Mild prominence of interstitial markings suggest mild interstitial pulmonary edema .
    OUTPUT:
    
Mild interstitial pulmonary edema .