Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is limited by patient positioning . Lung volumes remain low . Heart size is mildly enlarged but unchanged . The aorta is tortuous and diffusely calcified . Crowding of bronchovascular structures persists without overt pulmonary edema . There is continued patchy opacities in both lung bases , which may reflect atelectasis and / or aspiration , not substantially changed in the interval . No new focal consolidation , pleural effusion or pneumothorax is present . Fracture of the left sixth posterior rib is unchanged .
    OUTPUT:
    
Limited examination due to patient positioning and low lung volumes . Continued bibasilar airspace opacities may reflect a combination of atelectasis and / or aspiration . No new focal consolidation .