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TB Progression Score 5.
(a) TBI = 2. CT image demonstrated ground-glass and reticular opacities with sub-pleural and basal distribution and mild traction bronchiectasis associated with architectural distortion in the left basal area.
(b) TBI = 2. Follow-up CT image demonstrated obvious progression of ground-glass and reticular opacities with moderate traction bronchiectasis and increased architectural distortion.
TBI, traction bronchiectasis/bronchiolectasis index
