Table 4.
Tumor factors involving long procedure times for ESD-P
| Long procedure time | Shorter procedure time | P | |
|---|---|---|---|
| n = 30 | n = 11 | ||
| Previous surgery type, (%) | 0.412 | ||
| Distal gastrectomy | 20 (66.7%) | 7 (63.6%) | |
| Proximal gastrectomy | 3 (10.0%) | 2 (18.2%) | |
| Pylorus preserving gastrectomy | 0 (0%) | 1 (9.1%) | |
| Esophagectomy | 7 (23.3%) | 1 (9.1%) | |
| Tumor size, n (%) | 0.651 | ||
| < 21 | 24 (80%) | 10 (90.9%) | |
| ≥ 21 | 6 (20%) | 1 (9.1%) | |
| Tumor depth, n (%) | 0.559 | ||
| T1a | 26 (86.7%) | 11 (100%) | |
| T1b | 4 (13.3%) | 0 (0%) | |
| Lesion location, n (%) | 0.719 | ||
| Upper | 9 (30.0%) | 4 (36.4%) | |
| Middle or lower | 21 (70.0%) | 7 (63.6%) | |
| Suture line or anastomotic site, n (%) | 0.038* | ||
| Involved | 17 (56.7%) | 2 (18.2%) | |
| Not involved | 13 (43.4%) | 9 (81.8%) | |
| Morphology, n (%) | 0.287 | ||
| Flat or depressed | 20 (66.7%) | 5 (45.5%) | |
| Protruding | 10 (33.3%) | 6 (54.5%) | |
| Histology, n (%) | 1 | ||
| Differentiated | 28 (93.3%) | 11 (100%) | |
| Undifferentiated | 2 (6.7%) | 0 (0%) | |
| Ulceration (scar) | 1 | ||
| Presence | 2 (6.7%) | 0 (0%) | |
| Absence | 28 (93.3%) | 11 (100%) |
ESD-P endoscopic submucosal dissection for early gastric cancer in the postoperative stomach
The p value was calculated using the χ2 test or the Fisher exact test for categorical data
*Significant