Table 3. Misclassification in wide interval sections compared the 2-mm interval sections for endoscopic resection criteria.
| Variables | Section intervals | ||||||
|---|---|---|---|---|---|---|---|
| 4-mm interval | 6-mm interval | ||||||
| 2n | 2n+1 | 3n | 3n+1 | 3n+2 | |||
| Expanded criteria in 2-mm interval sections (n=149) | |||||||
| Change from expanded to absolute criteria | 3/149 (2.0) | 3/149 (2.0) | 6/149 (4.0) | 4/149 (2.7) | 2/149 (1.3) | ||
| Missed submucosal invasion | 3 | 3 | 6 | 4 | 2 | ||
| Out-of-indication cases in 2-mm interval sections (n=150) | |||||||
| Change from out-of-indication to absolute criteria | 1/150 (0.7) | 2/150 (1.3) | 4/150 (2.7) | 2/150 (1.3) | 5/150 (3.3) | ||
| Missed submucosal invasion | 1 | 1 | 3 | 1 | 4 | ||
| Missed LVI | 0 | 1 | 1 | 1 | 1 | ||
| Change from out-of-indication to expanded criteria | 3/150 (2.0) | 8/150 (5.3) | 6/150 (4.0) | 8/150 (5.3) | 12/150 (8.0) | ||
| Missed submucosal invasion | 1 | 1 | 3 | 2 | 7 | ||
| Missed LVI | 2 | 7 | 3 | 6 | 5 | ||
LVI = lymphovascular invasion.