Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable semi upright frontal chest radiograph demonstrates low lung volumes with bibasilar atelectasis and bronchovascular crowding . The heart is normal in size . No focal consolidation , pleural effusion , or pneumothorax is identified . The visualized upper abdomen demonstrates gaseous distention of bowel loops in the left upper quadrant .
    OUTPUT:
    
No pneumothorax identified . Low lung volumes .