Table 2.
Clinical outcomes of endoscopic surveillance.
| Pouch Patients | IRA Patients | p-Value | |
|---|---|---|---|
| n | 22 | 12 | |
| Median follow-up period from the start of surveillance, (y) median (range) |
11.3 (2.2–17.1) | 21.7 (1.0–38.0) | 0.202 |
| Interval of lower endoscopy, (months) median (range) | 12 (6–24) | 6 (6–24) | 0.097 |
| Number of lower endoscopies, n, median (range) | 13.5 (2–50) | 18.0 (2–60) | 0.208 |
| Number of endoscopic treatments per patient, n, median (range) | 5.0 (1–16) | 13.5 (1–48) | 0.074 |
| Number of treated adenomas per treatment, n, median (range) | 12.5 (3–150) | 13.5 (3–60) | 0.454 |
| Cumulative number of treated adenomas per patient, n, median (range) |
55 (6–480) | 172.5 (20–1106) | 0.191 |
| Cumulative number of treatments (all patients) | 120 | 169 | |
| Detail of procedures | |||
| APC, n (%) | 116 (96.7) | 162 (95.6) | |
| EMR & EPMR, n (%) | 8 (6.7) | 5 (3.0) | 0.007 |
| Cold polypectomy, n (%) | 15 (12.5) | 4 (2.4) | |
| Combination, n (%) | 9 (7.5) | 7 (4.1) | |
| Total number of cumulative polyps | 2132 | 2682 | |
| Secondary cancer | 0 | 0 | |
| Additional surgery | 0 | 0 | |
| Complications | |||
| Delayed bleeding: % (n/N) | 10 (12/120) | 0 (0/169) | <0.001 |
| Perforation: % (n/N) | 0 (0/120) | 0.6 (1/169) | 0.863 |
APC, argon plasma coagulation; EMR, endoscopic mucosal resection; EPMR, endoscopic piecemeal mucosal resection.