Figure 7. A 64-year-old man with idiopathic pulmonary fibrosis (a) Enhanced CT scan shows mild para-aortic (arrow), subaortic (arrowheads) and right hilar (open arrow) lymphadenopathy. (b) Lung-window setting at the corresponding level shows peripheral, subpleural reticular opacities, characteristic of idiopathic pulmonary fibrosis. (From Sagel SS, Slone RM. Lung. In Lee JKT, Sagel SS, Stanley RJ, Heiken JP, editors. Computed body tomography with MRI correlation, 3rd edn. Philadelphia, PA: Lippincott-Raven Publishers, 1998:351–454 [15]. Reprinted with permission).