Variables | Conscious sedation (n = 93) | General anesthesia (n = 82) | p-value |
---|---|---|---|
Age (years) | 63.7 ± 8.0 | 65.3 ± 7.6 | 0.191 |
Gender, male | 85 (91.4) | 77 (93.9) | 0.577 |
Tumor location | Â | Â | 0.064 |
 Upper thoracic | 4 (4.3) | 9 (11.0) |  |
 Middle thoracic | 21 (22.6) | 25 (30.5) |  |
 Lower thoracic | 65 (69.9) | 48 (58.5) |  |
 Esophagogastric junction | 3 (3.2) | 0 (0.0) |  |
Tumor morphology |  |  | <  0.001 |
 IIa | 6 (6.5) | 20 (24.4) |  |
 IIb | 77 (82.8) | 48 (58.5) |  |
 IIc | 10 (10.8) | 11 (13.4) |  |
 Mixed | 0 (0.0) | 3 (3.7) |  |
Gross tumor size (cm) | 1.2 ± 0.6 | 1.9 ± 1.0 | <  0.001 |
Pathologic tumor size (cm) | 1.2 ± 0.6 | 1.8 ± 0.9 | <  0.001 |
Circumferential size of the tumor (of lumen) | Â | Â | 0.005 |
 <  1/4 | 24 (25.8) | 26 (31.7) |  |
 ≥ 1/4, <  1/2 | 66 (71.0) | 43 (52.4) |  |
 ≥ 1/2, <  3/4 | 3 (3.2) | 13 (15.9) |  |
 ≥ 3/4 | 0 (0.0) | 0 (0.0) |  |
Circumferential size of the post-ESD mucosal defect (of lumen) | Â | Â | < 0.001 |
 < 1/4 | 4 (4.3) | 1 (1.2) |  |
 ≥ 1/4, < 1/2 | 49 (52.7) | 19 (23.2) |  |
 ≥ 1/2, <  3/4 | 37 (39.8) | 48 (58.5) |  |
 ≥ 3/4 | 3 (3.2) | 14 (17.1) |  |
Depth of tumor invasion | Â | Â | < 0.001 |
 M1 | 20 (21.5) | 6 (7.3) |  |
 M2 | 38 (40.9) | 33 (40.2) |  |
 M3 | 22 (23.7) | 20 (24.4) |  |
 SM1 | 9 (9.7) | 1 (1.2) |  |
 SM2&3 | 4 (4.3) | 22 (26.8) |  |
Experience of endoscopist, First 10 esophageal ESDs | 38 (40.9) | 13 (15.9) | < 0.001 |