Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a diffuse centrilobular nodular pattern with widespread bronchiectasis , consistent with chronic airways disease . Previously noted right lung base consolidation is similar in appearance , and may represent pneumonia and / or atelectasis . No pleural effusion or pneumothorax . Cardiomediastinal contours are unchanged . No subdiaphragmatic free air . There is S - shaped curvature of the thoracolumbar spine . Hiatal hernia noted .
    OUTPUT:
    
Unchanged diffuse acute on chronic chronic small airways disease , with possible superimposed pneumonia or atelectasis at the right lung base .