Flow chart. Of the 330 resected nGGOs, 314 were diagnosed as lung adenocarcinoma, and the rate of malignancy was 95.2%. aAmong 21 nGGOs, six nGGOs were co-resected with indicated GGO nodules and one nGGO was resected because metastasis of underlying thyroid cancer was strongly suspected. The decision to resect the other 14 GGOs was mainly influenced by the patients’ will. nGGOs, nodular ground-glass opacities; AIS, adenocarcinoma in situ; MIA, minimally invasive adenocarcinoma; ADC, adenocarcinoma; AAH, atypical adenomatous hyperplasia.