Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . This accentuates the size of the cardiac silhouette which is likely mildly enlarged . The aorta is mildly tortuous . The mediastinal contours are unremarkable . There is prominence of the pulmonary vascular markings , but no pulmonary edema is present . Minimal streaky opacities in the lung bases are compatible with atelectatic changes . No focal consolidation , pleural effusion or pneumothorax is present . Minimal degenerative changes are seen within the imaged spine .
    OUTPUT:
    
Low lung volumes and mild bibasilar atelectasis .