Table 2.
Procedure characteristics (∗R0 for neoplasia was defined as R0 for cancer and high-grade dysplasia. ∗∗Rx resection was diagnosed at the HM in one lesion and at the HM in another).
| Procedure time, median (range) (minutes) | 150 (75-300) |
| Resection rates,n(%) | |
| En bloc resection | 23 (100) |
| R status for neoplasia∗, R0/R1/Rx | 21 (91.3)/0/2∗∗ (8.7) |
| R status for Barrett's metaplasia, R0/R1/Rx | 8 (34.8)/15 (65.2)/0 |
|
| |
| Resection ulcer | |
| 75-89% of the circumference, n (%) | 12 (52.2) |
| 90-99% of the circumference, n (%) | 7 (30.4) |
| 100% of the circumference, n (%) | 4 (17.4) |
|
| |
| Resection specimen | |
| Horizontal diameter, median (range) (mm) | 70 (43-110) |
| Vertical diameter, median (range) (mm) | 45 (20-65) |
|
| |
| Histopathological diagnosis | |
| Adenocarcinoma, n (%) | 23 (100) |
| Single lesion, n (%) | 16 (69.6%) |
| Diameter of single lesion; median (range) (mm) | 40 (10-60) |
| Multifocal neoplasia, n (%) | 7 (30.4%) |
|
| |
| Histopathology,n | |
| Invasion depth, mucosal (pT1a)/submucosal (pT1b) | 21/2 |
| Grading, G1/G2/G3 | 14/6/3 |
| Lymphatic invasion | 1 |
| Vascular invasion | 0 |