Table 1.
Clinicopathological characteristics and procedure outcomes of the 156 esophageal squamous cell carcinomas in 147 patients n (%)
| Patients = 147, ESCC = 156 | |
| Age, median (range) | 68 (46-88) |
| Sex | |
| Male | 131 (89.1) |
| Female | 16 (10.9) |
| Lesion | |
| Maximum dimension, median (range), mm | 29 (6-68) |
| Location | |
| Upper | 8 (5.1) |
| Middle | 83 (53.2) |
| Lower | 65 (41.7) |
| Depth of invasion | |
| EP | 50 (32.1) |
| LPM | 44 (28.2) |
| MM | 37 (23.7) |
| SM1 | 8 (5.1) |
| SM2 | 17 (10.9) |
| Macroscopic type | |
| 0-IIc | 151 (96.8) |
| 0-IIa | 3 (1.9) |
| 0-I + IIc | 2 (1.3) |
| Predominant site | |
| Right | 102 (65.4) |
| Left | 54 (34.6) |
| Operator | |
| Instructor | 100 (64.1) |
| Novice | 56 (35.9) |
| Procedure time, mean ± SD, min | 107.1 ± 50.4 |
| En block resection | 141 (90.4) |
| Perforation | 9 (5.8) |
| Late perforation | 0 (0.0) |
ESCC: Esophageal squamous cell carcinoma.