Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable , with mild cardiomegaly . There is a mildly tortuous thoracic aorta as noted . Bilateral prominent interstitial markings suggest mild interstitial pulmonary edema . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Mild interstitial pulmonary edema . No evidence of pneumonia .