Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate top normal cardiac size . The mediastinal and hilar contours are within normal limits . There is mildly increased interstitial markings raising question of mild edema , which is excluded on subsequent CT . Subtle aspiration can not be excluded . There is no confluent consolidation to suggest definite pneumonia . No pneumothorax or pleural effusion .
    OUTPUT:
    
No definite acute cardiopulmonary process .