Table 1 Comparison of conventional PET/CT parameters between lepidic group and acinar-papillary group
Growth pattern group | Lepidic n = 18 | Acinar-papillary n = 75 | P value |
|---|---|---|---|
Nodule type | |||
pGGN | 4 (22.2%) | 13 (17.3%) | 0.630 |
mGGN | 14 (77.8%) | 62 (82.7%) | |
Location | |||
Subpleural/perifissural | 17 (94.4%) | 74 (98.7%) | 0.351 |
Parenchymal | 1 (5.6%) | 1 (1.3%) | |
Shape | |||
Round/oval | 10 (55.6%) | 32 (42.7%) | 0.324 |
Polygonal/irregular | 8 (44.4%) | 43 (57.3%) | |
Edge | |||
Smooth | 11 (61.1%) | 24 (32.0%) | 0.022 |
Lobular/spiculated | 7 (38.9%) | 51 (68.0%) | |
Bronchial sign | |||
Natural | 3 (16.7%) | 8 (10.7%) | 0.479 |
Dilated/distorted/cutoff | 15 (83.3%) | 67 (89.3%) | |
Cystic appearance present | 1 (5.6%) | 13 (17.3%) | 0.290 |
Pleural indentation present | 14 (77.8%) | 65 (86.7%) | 0.344 |
Vascular convergence present | 18 (100.0%) | 73 (97.3%) | 0.484 |
DGGN (mm) | 26.4 (21.0–28.9) | 24.3 (19.2–28.4) | 0.918 |
DSolid (mm) | 8.1 (3.7–15.2) | 11.8 (5.6–16.1) | 0.257 |
CTR | 0.3 (0.2–0.6) | 0.5 (0.3–0.7) | 0.168 |
CTGGO (HU) | − 545.5 (− 598.8–398.8) | − 425.0 (− 477.5–335.0) | 0.014 |
SUVmax | 2.4 (1.7–3.3) | 2.9 (2.1–4.3) | 0.076 |