(A) Mild bronchiectasis in anterior and posterior segments of right upper lobe of 67-year-old man, scored as 1 point, with bronchus diameter greater than adjacent vessel diameter (arrows). (B) Moderate bronchiectasis in superior segment of right lower lobe of 86-year-old woman, scored as 2 points, with bronchus diameter two to three times vessel diameter (arrow). (C) Severe bronchiectasis in superior segment of left lower lobe of 66-year-old man, scored as 3 points, with bronchus diameter greater than three times vessel diameter (arrow). (D) Mucus plugging associated with severe bronchiectasis in posterior basal segment of right lower lobe of 66-year-old man (arrow).