Preoperative clinical staging | |
 Tumor depth | |
  T1 | 2 (2.1%) |
  T2 | 19 (20.0%) |
  T3 | 61 (64.2%) |
  T4 | 13 (13.7%) |
 Lymph Node metastasis | |
  N0 | 38 (40.0%) |
  N1 | 40 (42.1%) |
  N2 | 17 (17.9%) |
 AJCCa Stage (Clinical) | |
  I | 14 (14.7%) |
  II | 24 (25.3%) |
  III | 57 (60.0%) |
Postoperative pathological outcomes | |
 Histology | |
  Well differentiation | 16 (16.9%) |
  Moderate differentiation | 76 (80.0%) |
  Poor differentiation | 3 (3.1%) |
 Tumor size | |
  < 5 cm | 85 (89.5%) |
   ≥ 5 cm | 10 (10.5%) |
 Tumor size (cm, mean ± SD) (range) | 2.46 ± 1.652 (0–8) |
 Tumor depth | |
  T0 | 29 (30.5%) |
  Tis | 1 (1.0%) |
  T1 | 14 (14.7%) |
  T2 | 20 (21.1%) |
  T3 | 28 (29.5%) |
  T4 | 3 (3.2%) |
 Lymph Node metastasis | |
  N0 | 73 (77.1%) |
  N1 | 19 (19.8%) |
  N2 | 3 (3.1%) |
 AJCC Stage (Pathologic) | |
  0 | 27 (28.4%) |
  I | 27 (28.4%) |
  II | 19 (20.0%) |
  III | 22 (23.2%) |
 Tumor Regression Grade (75 patients with preoperative CCRT) | |
  0 | 28 (37.3%) |
  1 | 30 (40.0%) |
  2 | 11 (14.7%) |
  3 | 6 (8.0%) |
 Harvested Lymph Node (median) (range) | 9 (0–36) |
 Harvested Apical Node (median) (range) | 2 (0–15) |
 Distance of distal resection margin (cm, median) (range) | 2.30 (0.2–6.5) |
 Distance of circumferential resection margin (cm, median) (range) | 1.0 (0.2–3.5) |
 Distal resection margin | |
  Free | 94 (98.9%) |
  Positive | 1 (1.1%) |
 Circumferential resection margin | |
  Free | 93 (97.9%) |
  Positive | 2 (2.1%) |
 Resection Degree of Primary tumor | |
  R0 | 92 (96.8%) |
  R1 | 3 (3.2%) |
 Oncological outcomes | |
 Follow-up periods (months, median) (range) | 25.6 (6.6–52.2) |
 R0 resection | 91 |
  Locoregional recurrence | 5 (5.5%) |
  Distant metastasis | 10 (11.0%) |
   Liver + Lung | 1 (1.1%) |
   Lung | 5 (5.5%) |
   Liver | 2 (2.2%) |
   Chest Wall | 1 (1.1%) |
   Peritoneal carcinomatosis | 1 (1.1%) |
 R1 resection | 3 |
  Local recurrence | 1 (33.3%) |
  Lung | 1 (33.3%) |
  Peritoneum | 1 (33.3%) |