Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single semi-upright frontal view of the chest was obtained portably . There is no free air under the diaphragm . Gaseous distention of large bowel is incompletely imaged on this study . Low lung volumes results in bronchovascular crowding . Linear opacity at the right lung base corresponds to scarring seen on CT . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . The aorta is mildly tortuous .
    OUTPUT:
    
No free intraperitoneal air . Large bowel distention is better assessed on subsequent CT .