Figure 6a. Scrub typhus in a 68-year-old man with previously diagnosed usual interstitial pneumonia. (a) Initial chest radiograph shows patchy opacity (arrow) in the upper lobe of the right lung and areas of reticular and ground-glass opacity near the base in both lungs, findings suggestive of usual interstitial pneumonia. (b) Axial thin-section (1.0-mm collimation) CT image obtained with lung window settings shows a focal area of ground-glass opacity in the upper lobe of the right lung. Follow-up thin-section CT images obtained 2 weeks later and 17 months later (not shown) revealed resolution of the parenchymal opacity in the right upper lobe.