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. 2020 Aug;12(8):4315–4326. doi: 10.21037/jtd-20-659

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2020 Journal of Thoracic Disease. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Benign and malignant lesions presenting as pGGNs. (A) AAH presenting as a 6.4 mm well-defined pGGN (white arrowhead) in the LUL of a 44-year-old male. (B) Invasive adenocarcinoma presenting as an 8 mm well-defined pGGN (white arrowhead) with air bronchograms in the LLL of a 68-year-old male. AAH, atypical adenomatous hyperplasia; LUL, left upper lobe; LLL, left lower lobe.