Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . There is calcification of the aorta , indicating atherosclerosis . The mediastinal and hilar contours are unchanged . The pulmonary vasculature is normal . Lungs are clear . There may be slight blunting of the costophrenic angles . No pneumothorax is seen . There are no acute osseous abnormalities . Again seen is a partially visualized sclerotic , nonaggressive appearing lesion in the right proximal humerus , likely representing an enchondroma with bone infarct considered less likely . Degenerative changes of the visualized thoracolumbar spine .
    OUTPUT:
    
Blunting of the bilateral costophrenic angles , which may represent trace pleural effusions , mild atelectasis or pleural thickening . Otherwise , no acute cardiopulmonary abnormality .