Table 3 Intraoperative and pathological characteristics
Characteristic | Non-elderly group (n = 100) | Elderly group (n = 50) | P |
|---|---|---|---|
Surgical approach | |||
Open | 89 (89%) | 45 (90%) | 0.851 |
Thoracoscopic | 11 (11%) | 5 (10%) | |
Number of field dissected | |||
2-field dissection | 78 (78%) | 40 (80%) | 0.777 |
3-field dissection | 22 (22%) | 10 (20%) | |
Reconstruction | |||
Jejunal flap | 22 (22%) | 10 (20%) | 0.777 |
Gastric tube | 78 (78%) | 40 (80%) | |
Operative time (minutes), mean ± SD | 473 ± 111 | 475 ± 122 | 0.889 |
Intraoperative blood loss (ml), median (range) | 439 (31–1959) | 517 (187–1886) | 0.051 |
Intraoperative transfusion (%) | 13 (13%) | 13 (26%) | 0.053 |
Number of dissected lymph nodes mean ± SD | 43.7 ± 14.8 | 40.1 ± 15.8 | 0.097 |
Histopathologic Type (%) | |||
Squamous cell carcinoma | 94 | 49 | 0.192 |
Adenocarcinoma | 2 | 1 | |
Others | 4 | 0 | |
Tumor size (mm), mean ± SD | 38.3 ± 21.0 | 44.1 ± 21.6 | 0.141 |
Multiple lesion (%) | 15 (15%) | 8 (16%) | 0.873 |
T factor | |||
pT0/pTis | 1 (1%) | 0 | 0.806 |
pT1 | 51 (51%) | 27 (54%) | |
pT2 | 11 (11%) | 6 (12%) | |
pT3 | 37 (37%) | 17 (34%) | |
pT4 | 0 | 0 | |
N factor | |||
pN0 | 45 (45%) | 25 (50%) | 0.779 |
pN1 | 30 (30%) | 15 (30%) | |
pN2 | 20 (20%) | 9 (18%) | |
pN3 | 5 (5%) | 1 (2%) | |
TNM stage | |||
0 | 1 (1%) | 0 | 0.546 |
I | 36 (36%) | 21 (42%) | |
II | 20 (20%) | 9 (18%) | |
III | 36 (36%) | 19 (38%) | |
IV | 7 (7%) | 1 (2%) | |