Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which appears mildly enlarged . Aortic knob is calcified . The mediastinal and hilar contours are otherwise unremarkable . Crowding of the bronchovascular structures is noted without overt pulmonary edema . Patchy opacities in the lung bases , more pronounced on the left , likely reflect areas of atelectasis . No pneumothorax is visualized . No displaced fracture is clearly evident .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis and probable trace bilateral pleural effusions . No displaced fractures are visualized .