Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is trace atelectasis at the base of the left lung . The lungs are otherwise clear without focal consolidation , pleural effusion or pneumothorax . No intraperitoneal free air is seen on this portable radiograph .
    OUTPUT:
    
Trace atelectasis at the base of the left lung . No focal consolidation or pleural effusion . No large free intraperitoneal air .