Table 2 Pathologic characteristics of patients with stage I pulmonary adenocarcinoma according to lepidic component
From: The importance of the lepidic component as a prognostic factor in stage I pulmonary adenocarcinoma
Group 1 | Group 2 | Group 3 | p value | |
|---|---|---|---|---|
Tumor size, cm (±SD) | 2.2 (±0.9) cm | 2.3 (±0.9) cm | 2.0 (±0.7) cm | 0.076 |
Pleural invasion, n (%) | 23 (31.9 %) | 18 (24.3 %) | 4 (7.5 %) | 0.005 |
Lymphatic invasion, n (%) | 21 (29.2 %) | 28 (37.8 %) | 9 (17.0 %) | 0.039 |
Vascular invasion, n (%) | 9 (12.5 %) | 9 (12.5 %) | 1 (1.9 %) | 0.088 |
Differentiation | <0.001 | |||
Mild, n (%) | 15 (20.5 %) | 41 (54.7 %) | 48 (90.6 %) | |
Moderate, n (%) | 49 (67.1 %) | 31 (41.3 %) | 5 (9.4 %) | |
Poor, n (%) | 9 (12.3 %) | 3 (4.0 %) | 0 (0 %) | |
EGFR mutation | 75.4 % | 90.3 % | 79.4 % | 0.087 |
Micropapillary component, % (±SD) | 3.4 (±9.4)% | 3.0 (±8.5)% | 0.1 (±0.7)% | 0.006 |
Solid component, % (±SD) | 15.2 (±27.9)% | 1.1 (±3.7)% | 0.3 (±1.6)% | <0.001 |
Acinar component, % (±SD) | 49.0 (±37.7)% | 52.2 (±21.6)% | 21.0 (±11.2)% | <0.001 |
Papillary component, % (±SD) | 23.8 (±22.5)% | 8.7 (±18.2)% | 2.9 (±6.8)% | <0.001 |