Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta is diffusely calcified . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is not engorged . Minimal streaky atelectasis is seen in the lung bases . There is mild blunting of the costophrenic angles posteriorly which could suggest trace bilateral pleural effusions . No pneumothorax is identified . No acute osseous abnormality is seen . There are mild to moderate multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Mild blunting of the costophrenic angles posteriorly suggests trace bilateral pleural effusions . Mild bibasilar atelectasis .