Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is borderline enlarged . The aorta is tortuous . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lung volumes are slightly low . Streaky opacities are demonstrated the lung bases . There appears to be slight blunting of the costophrenic angles bilaterally , suggestive of tiny pleural effusions . No pneumothorax is identified . There are moderate degenerative changes seen in the thoracic spine . No displaced fracture is identified .
    OUTPUT:
    
Bibasilar atelectasis . Probable trace bilateral pleural effusions . No displaced fractures are clearly visualized .