Table 1.
Clinicopathological characteristics of patients with esophageal squamous cell carcinoma
| Variables | n (%) | |
| Age (yr) | ≤ 60 | 46 (25.6) |
| > 60 | 134 (74.4) | |
| Sex | Male | 169 (93.9) |
| Female | 11 (6.1) | |
| Smoking | No | 28 (15.6) |
| Yes | 151 (84.4) | |
| Histological grade | WD | 35 (19.4) |
| MD | 119 (66.1) | |
| PD and basaloid | 26 (14.4) | |
| Localization | Upper | 7 (3.9) |
| Middle | 44 (24.9) | |
| Lower | 116 (65.5) | |
| EGJ | 10 (5.6) | |
| T | 1a | 16 (8.9) |
| 1b | 65 (36.1) | |
| 2 | 17 (9.4) | |
| 3 | 78 (43.3) | |
| 4 | 4 (2.2) | |
| N | 0 | 92 (51.1) |
| 1 | 52 (28.9) | |
| 2 | 29 (16.1) | |
| 3 | 7 (3.9) | |
| Stage | IA | 14 (7.8) |
| IB | 49 (27.2) | |
| IIA | 21 (11.7) | |
| IIB | 32 (17.8) | |
| IIIA | 37 (20.6) | |
| IIIB | 19 (10.6) | |
| IIIC | 8 (4.4) | |
| Adjuvant therapy | No | 112 (67.8) |
| Yes | 58 (32.2) | |
| FGFR1 amplification | No amplification | 136 (78.6) |
| Low amplification | 3 (1.7) | |
| High amplification | 34 (19.7) | |
| MYC amplification | No amplification | 77 (45.9) |
| Low amplification | 20 (11.9) | |
| High amplification | 71 (42.3) | |
| MYC expression | 0 (none) | 74 (41.1) |
| 1 (weak) | 54 (30.0) | |
| 2 (moderate) | 41 (22.8) | |
| 3 (strong) | 11 (6.1) |
FGFR1: Fibroblast growth factor receptor 1; WD: Well differentiated; MD: Moderately differentiated; PD: Poorly differentiated; EGJ: Esophagogastric junction.