Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is slight subpleural scarring at each lung apex . Otherwise , lung fields appear clear . There is no pleural effusion or pneumothorax . Bony structures appear within normal limits . There are a number of small air - fluid levels projecting over the left upper quadrant including within the stomach , but no evidence for free air or bowel dilatation on limited visualization of the epigastric region . Surgical clips project over the right upper quadrant .
    OUTPUT:
    
1 . No evidence of acute disease . 2 . Non-specific air - fluid levels seen within bowel in the left upper quadrant .