). This recommendation is not restricted to examinations performed specifically for nodule assessment or lung cancer screening, as lung nodules may be encountered incidentally in any adult patient. If the initial examination was performed with thick sections, a short-term follow-up examination with contiguous thin sections should be considered as a baseline for future comparison.
 Figure 1a: (a) Lung window and (b) soft-tissue window 1-mm transverse CT sections show a smoothly marginated solid nodule (arrow) with internal fat and calcification, consistent with a hamartoma. No further CT follow-up is recommended for such findings.  Figure 1b: (a) Lung window and (b) soft-tissue window 1-mm transverse CT sections show a smoothly marginated solid nodule (arrow) with internal fat and calcification, consistent with a hamartoma. No further CT follow-up is recommended for such findings.  Figure 2a: (a) CT image shows a smoothly marginated solid nodule with central calcification, typical of a healed granuloma. No further CT follow-up is recommended for such nodules. (b) CT image shows a smoothly marginated solid nodule with laminar calcification, typical of a healed granuloma. No further CT follow-up is recommended for such findings.  Figure 2b: (a) CT image shows a smoothly marginated solid nodule with central calcification, typical of a healed granuloma. No further CT follow-up is recommended for such nodules. (b) CT image shows a smoothly marginated solid nodule with laminar calcification, typical of a healed granuloma. No further CT follow-up is recommended for such findings. |