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. Author manuscript; available in PMC: 2023 Sep 1.

Published in final edited form as: AJR Am J Roentgenol. 2022 Mar 23;219(3):397–405. doi: 10.2214/AJR.22.27595

Figure 2. — 59-year-old man undergoing lung cancer screening CT. (A) Axial image from baseline CT examination shows a nodule (arrow) classified as solid and with mean diameter of 4.5–5.0 mm (depending on reader). Nodule was classified as Lung-RADS category 2 because of size < 6 mm. (B) Axial image from 2-year follow-up CT examination shows that nodule has increased in size and became cavitary (arrow). Nodule was eventually diagnosed as a lung cancer. Category 2 assignment represented a false-negative interpretation.

Figure 2. — 59-year-old man undergoing lung cancer screening CT. (A) Axial image from baseline CT examination shows a nodule (arrow) classified as solid and with mean diameter of 4.5–5.0 mm (depending on reader). Nodule was classified as Lung-RADS category 2 because of size < 6 mm. (B) Axial image from 2-year follow-up CT examination shows that nodule has increased in size and became cavitary (arrow). Nodule was eventually diagnosed as a lung cancer. Category 2 assignment represented a false-negative interpretation.