Table 3. MIA clinicopathological features.
| Variable | Total (n=107) | Group 1 (MIA <1 cm) (n=82) | Group 2 (MIA ≥1 cm) (n=25) | P value |
|---|---|---|---|---|
| Multiple primary lung cancer (n) | 50 (46.7%) | 36 (43.9%) | 14 (56%) | 0.289 |
| Clinical tumor size (cm) | 9.36±3.508 [3–26] | 8.05±1.962 [3–14] | 13.64±4.051 [8–26] | <0.001* |
| Pathological tumor size (cm) | 8.94±3.685 [3–25] | 7.29±1.718 [3–10] | 14.36±3.817 [11–25] | <0.001* |
| Size change (n) | 17 (15.9) | 10 (12.2%) | 7 (28%) | 0.069 |
| CT density change (n) | 7 (6.5%) | 5 (6.1%) | 2 (8%) | 0.664 |
| CT image (n) | 0.785 | |||
| pGGO | 41 (38.3%) | 32 (39%) | 9 (36%) | |
| mGGO | 66 (61.7%) | 50 (61%) | 16 (64%) | |
| CT density (average) | −433.50±173.876 | −419.56±182.795 | −479.24±133.845 | 0.134 |
| Surgical procedure (n) | 0.011* | |||
| Wedge resection | 43 (40.2%) | 38 (46.3%) | 5 (20%) | |
| Segmentectomy | 26 (24.3%) | 21 (25.6%) | 5 (20%) | |
| Lobectomy | 38 (35.5%) | 23 (28.1%) | 15 (60%) |
Data are presented as mean (SD), range [–] or n (%). *P<0.05. MIA, minimally invasive adenocarcinoma; CT, computed tomography; pGGO, pure ground-glass opacity; mGGO, mixed solidity ground glass opacity; SD, standard deviation.