Fig. 3
A typical CT and 18F-FDG PET/CT images of STAS-negative lung adenocarcinoma in a 62-year-old female patient. The histological subtype was of an intermediate grade (acinar predominant predominant). A The CT scan showed a mixed ground-glass density nodule in the upper lobe of the right lung, with a maximum diameter of approximately 2.2 cm. The solid component within the nodule measures 0.6 cm, accounting for approximately 27.3% of the total volume. The nodule have clear borders and no spiculations or traction on the pleura. B The PET/CT scan showed slight uptake of FDG, with corresponding values of SUVmax, SUVmean, SUVpeak, SULmax, SULmean, SULpeak, MTV and TLG was 2.4, 1.3, 1.6, 1.8, 1.0, 1.2, 2.6 and 3.4, respectively