Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is somewhat limited due to patient rotation . The heart size remains mildly enlarged . The aorta is tortuous and demonstrates mild atherosclerotic calcification of the arch . The hilar contours are unremarkable , and there is no pulmonary edema . Minimal patchy opacity within the right lung base may reflect atelectasis . Blunting of the right costophrenic angle suggests a trace effusion . No pneumothorax is identified . Numerous rib fractures are seen bilaterally which appear chronic . Multilevel degenerative changes are noted in the imaged thoracolumbar spine .
    OUTPUT:
    
Minimal patchy right basilar opacity may reflect atelectasis , with a trace right pleural effusion . Infection is not completely excluded .