Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low with bibasilar atelectasis . No focal consolidation , edema , or pneumothorax . Slight increase lucency in the left upper and mid hemithorax is likely secondary to emphysema which is more severe in the left lung as seen on the CT chest from ___ . The thoracic aorta is tortuous or ectatic . Aortic knob calcifications are mild . The heart is probably normal in size given the lower lung volumes . Sclerotic , nonaggressive appearing lesion is incompletely imaged in the right proximal humerus but was also seen partially in ___ , most likely an enchondroma , less likely bone infarct .
    OUTPUT:
    
No focal pneumonia .