Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal to mildly enlarged , decreased in size as compared to the prior study . Hilar contours are normal . No pulmonary edema is seen . High - density material projects over the stomach , partially imaged .
    OUTPUT:
    
Clear lungs . No evidence of active tuberculosis .