Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of cardiac silhouette which is likely within normal limits . The aorta is mildly unfolded . Mediastinal and hilar contours otherwise are unremarkable . There is no pulmonary vascular congestion . Mild bibasilar airspace opacities likely reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities are seen .
    OUTPUT:
    
Low lung volumes with probable mild bibasilar atelectasis .