Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Aorta is tortuous and diffusely calcified . Bullous emphysematous changes are most severe within the lung apices . Bibasilar patchy opacities , right more than left , likely reflect atelectasis . Blunting of the right costophrenic angle posteriorly is suggestive of a small pleural effusion . No pneumothorax is identified . Compression fractures of T12 and L1 with evidence of prior kyphoplasty of L1 is re - demonstrated .
    OUTPUT:
    
Low lung volumes with patchy bibasilar opacities , most likely reflective of atelectasis but infection can not be completely excluded . Small right pleural effusion . Bullous emphysema .