Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an orogastric tube seen with its tip at least in the distal stomach . There is some atelectasis of the left lower lung . The cardiomediastinal silhouette and hilar contours are within normal limits . The pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia .