Table 2. Relationship between primary tumor score and clinicopathological factors.
| Factor | Primary tumor score | P-value | ||
|---|---|---|---|---|
| 0 (n = 109) | 1 (n = 60) | 2 (n = 78) | ||
| Sex | ||||
| Male | 74 (67.9) | 38 (63.3) | 52 (66.7) | 0.8337 |
| Female | 35 (32.1) | 22 (36.7) | 26 (33.3) | |
| Age (y) | ||||
| ≤ 70 | 60 (55.1) | 31 (51.7) | 46 (59.0) | 0.6883 |
| >70 | 49(44.9) | 29 (48.3) | 32 (41.0) | |
| Depth of tumor invasion | ||||
| pT1 | 109 (100.0) | 29 (48.4) | 0 (0.0) | < 0.0001 |
| pT2 | 0 (0.0) | 11 (18.3) | 6 (7.7) | |
| pT3 | 0 (0.0) | 17 (28.3) | 38 (48.7) | |
| pT4 | 0 (0.0) | 3 (5.0) | 34 (43.6) | |
| Lymph node metastasis | ||||
| Negative | 92 (84.4) | 35 (58.3) | 16 (20.5) | < 0.0001 |
| Positive | 17 (15.6) | 25 (41.7) | 62 (79.5) | |
| Stage | ||||
| I | 105 (96.3) | 31 (51.7) | 3 (3.8) | < 0.0001 |
| II-III | 4 (3.7) | 29 (48.3) | 75 (96.2) | |
| Lymphatic invasion | ||||
| Negative | 91 (83.5) | 29 (48.3) | 11 (14.1) | < 0.0001 |
| Positive | 18 (16.5) | 31 (51.7) | 67 (85.9) | |
| Venous invasion | ||||
| Negative | 98 (89.9) | 34 (56.7) | 15 (19.2) | < 0.0001 |
| Positive | 11 (10.1) | 26 (43.3) | 63 (80.8) | |
pT1: invasion of lamina propria or submucosa; pT2: invasion of muscularis propria; pT3: invasion of subserosa; pT4: penetration of serosa or invasion of adjacent structures.