Table 1 Baseline characteristics of all patients
Variable | Preoperative (number, %) | Postoperative (number, %) |
|---|---|---|
Age (mean ± SD, range) (years) | 58.0 ± 11.7 (26–87) | |
BMI (mean ± SD, range) (kg/m2) | 23.6 ± 3.0 (15.1 − 35.4) |  |
Gender | ||
 Male | 625 (60.0) | |
 Female | 417 (40.0) | |
Tumor size (mean ± SD, range) (mm) | ||
 Size using EGD (n = 631) | 16.1 ± 8.0 (2–60) | − |
 Size using EUS (n = 479) | 16.4 ± 5.9 (3–40) | − |
 Pathological size | − | 21.1 ± 14.8 (1–165) |
Ulcer | ||
 Positive | 66 (6.3) | 245 (23.5) |
 Negative | 976 (93.7) | 797 (76.5) |
Tumor location | ||
 Upper third | 146 (14.0) | 127 (12.2) |
 Middle or lower third | 896 (86.0) | 915 (87.8) |
Gross type | ||
 0-Ia | 29 (2.8) | 18 (1.7) |
 0-IIa | 278 (26.7) | 34 (3.3) |
 0-IIb | 224 (21.5) | 184 (17.7) |
 0-IIc | 428 (41.1) | 667 (64.0) |
 0-III | 83 (8.0) | 62 (6.0) |
 AGC | 0 | 77 (7.4) |
Histology | ||
 Papillary | 1 (0.1) | 1 (0.1) |
 Well differentiated | 165 (15.8) | 125 (12.0) |
 Moderately differentiated | 260 (25.0) | 264 (25.3) |
 Poorly differentiated | 252 (24.2) | 273 (26.2) |
 Signet ring cell | 364 (34.9) | 364 (34.9) |
 Mucinous | 0 | 2 (0.2) |
 Carcinoma with lymphoid stroma | 0 | 13 (1.2) |
Tumor detectability in CT scan | ||
 Detectable | 210 (20.2) | − |
 Undetectable | 832 (79.8) | − |
Presence of LMN in CT scan | ||
 Suspected | 42 (4.0) | − |
 Unsuspected | 1000 (96.0) | − |
NLR | 2.00 ± 1.32 (0.09 − 29.56) | − |
Tumor depth | ||
 Mucosa | − | 588 (56.4) |
 Submucosa | − | 373 (36.0) |
 Proper muscle | − | 56 (5.4) |
 Subserosa | − | 10 (1.0) |
 Serosa invasion | − | 15 (1.4) |
Lymph node classification | ||
 pN0 | − | 968 (92.9) |
 pN1 | − | 42 (4.0) |
 pN2 | − | 23 (2.2) |
 pN3a | − | 7 (0.7) |
 pN3b | − | 2 (0.2) |
Count of retrieved lymph nodes (mean ± SD, range) | − | 32.6 ± 11.9 (5–74) |