Fig. 3

The P-pGGNs representative CT images and microscopic subpleural pathological basis images. The line a presented an axial CT image and hematoxylin–eosin stained sections image of P-pGGN with a pleural tag without pleural folding in a 56-year-old male, showing that the tissue adjacent to the pleura was alveoli. The line b presented an axial CT image and hematoxylin–eosin stained sections image of P-pGGN with a pleural attachment without pleural distortion in a 68-year-old female, showing that the tissue adjacent to the pleura was lepidic. The line c presented an axial CT image and hematoxylin–eosin stained sections image of P-pGGN with a pleural retraction showing enfoldment of the pleura into the tumour in a 67-year-old female, showing that the tissue adjacent to the pleura was acinar. The line d presented an axial CT image and hematoxylin–eosin stained sections image of P-pGGN with a pleural retraction showing enfoldment of the pleura into the tumour in a 50-year-old male, showing that the tissue adjacent to the pleura was papillary