Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is an area of linear atelectasis at the right lung base . Lungs are otherwise clear . No findings suggestive of pneumonia . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Area of linear atelectasis at right lung base . No pneumonia . Findings discussed with ___ by ___ via telephone on ___ at 4 :59 PM , time of discovery .