Table 1.
Clinicopathologic characteristics and treatment results
| Characteristic/result | Value |
|---|---|
| Age, mean (range), years | 67 (38–85) |
| Gender, male:female | 9:6 |
| Resection size, mean (range), mm | 140.9 (105–270) |
| Lesion size, mean (range), mm | 125.9 (87–238) |
| Lesion location, n (%) | |
| >1 rectal segment | 12 (80.0) |
| Distal rectum | 3 (20.0) |
| Pectinate line involvement | 9 (60.0) |
| Macroscopic type, n (%) | |
| LST-G | 11 (73.3) |
| LST-NG | 4 (26.7) |
| Circumferential involvement, n (%) | |
| <75% | 7 (46.7) |
| 75–89% | 6 (40.0) |
| 90–99% | 1 (6.7) |
| 100% | 1 (6.7) |
| Fibrosis/MRsign, n (%) | 5 (33.3) |
| Histology, n (%) | |
| Low-grade adenoma | 3 (20.0) |
| High-grade adenoma | 9 (60.0) |
| Submucosal invasion | |
| SM1 (<1,000 µm) | 2 (13.3) |
| SM2 (>1,000 µm) | 1 (6.7) |
| En bloc resection, n (%) | 15 (100.0) |
| Curative resection (R0), n (%) | 8 (53.3) |
| Non-curative, n (%) | |
| High-risk (R1) | 2 (13.3) |
| Local-risk (RX) | 5 (33.3) |
| Perforation, n (%) | 1 (6.7) |
| Stenosis, n (%) | 3 (20.0) |
| Procedure time, min (range) | 220.4 (80–540) |
| Hospital stay time, days (range) | 2 (1–5) |
MRsign, muscle retracting sign.