Figure 12a. Reversibility of reticular pattern and traction bronchiectasis in a 58-year-old man with NSIP (mixed cellular and fibrotic pattern). (a) Initial transverse CT image shows marked basal reticular pattern with traction bronchiectasis. (b) At follow-up transverse CT performed 2 years later (without specific treatment), image obtained at a slightly lower level shows substantial resolution of reticular pattern, with residual ground-glass opacity.