Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta remains unfolded . The mediastinal and hilar contours are unremarkable . Lungs remain hyperinflated . There is no focal consolidation , pleural effusion or pneumothorax . There are mild degenerative changes of the imaged thoracolumbar spine . Retained oral contrast is seen within colonic loops of bowel in the left hemi-abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .