Table 4. Analysis of Risk Factors for Incomplete Resection.
| Variable | Complete resection (n=138) | Incomplete resection (n=20) | P-value |
|---|---|---|---|
| Age (yr) | 65.6±9.6 | 62.5±12.8 | 0.320 |
| Male:female | 82:56 | 9:11 | 0.240 |
| Tumor size (mm) | 25.6±10.0 | 27.5±14.7 | 0.500 |
| Procedure time (min) | 62.5±37.0 | 70.0±47.2 | 0.100 |
| Tumor location | 0.340 | ||
| Right side | 53 (38.4) | 10 (50.0) | |
| Left side | 85 (61.6) | 10 (50.0) | |
| Growth pattern | 0.290 | ||
| Polypoid | 50 (36.2) | 6 (30.0) | |
| LST-G | 61 (44.2) | 7 (35.0) | 0.490 |
| Homogeneous type | 26 (18.8) | 3 (15.0) | |
| Mixed nodular type | 35 (25.4) | 4 (20.0) | |
| LST-NG | 27 (19.6) | 7 (35.0) | |
| Pit pattern | 0.010 | ||
| IIIS | 31 (22.5) | 3 (15.0) | |
| IIIL | 40 (29.0) | 2 (10.0) | |
| IV | 37 (26.8) | 4 (20.0) | |
| VI | 30 (21.7) | 11 (55.0) | |
| Histology | 0.000 | ||
| Adenoma | 88 (63.8) | 3 (15.0) | |
| Carcinoma | 50 (36.2) | 17 (85.0) | |
| Depth of invasion | 0.000 | ||
| Mucosal | 128 (92.8) | 6 (30.0) | |
| More than submucosal | 10 (7.2) | 14 (70.0) | |
| Depth (µm) | 1,219.8±410.3 | 2,087.3±1,167.1 | 0.060 |
| Fibrosis | 0.000 | ||
| F0/F1 | 109 (79.0) | 3 (15.0) | |
| F2 | 29 (21.0) | 17 (85.0) | |
| Additional surgery | 2 (1.4) | 11 (84.6) | |
| Perforation | 8 (5.8) | 0 | 0.600 |
Values are presented as mean±SD or number (%).
LST-G, granular type of lateral spreading tumors; LST-NG, nongranular type of lateral spreading tumors; F0, no fibrosis; F1, mild fibrosis; F2, severe fibrosis.