Table 2 Association between endoscopic and histologic inflammation and polyp type.
| Inflammatory pseudopolyp | Hyperplastic polyp | Pseudopolyp with no inflammation | Sessile serrated adenoma | Serrated epithelial change | Polypoid low-grade dysplasia | Tubulo-villous adenoma | Adenocarcinoma | |
| CI, confidence interval. | ||||||||
| Endoscopic inflammation | ||||||||
| Inactive | 177 (17.2%) | 212 (20.6%) | 125 (12.2%) | 101 (9.8%) | 47 (4.6%) | 233 (22.7%) | 4 (0.4%) | 8 (0.8%) |
| Mild | 100 (27.9%) | 54 (15.0%) | 38 (10.6%) | 32 (8.9%) | 11 (3.1% | 83 (23.1%) | 5 (1.4%) | 3 (0.8%) |
| Moderate | 45 (34.9%) | 12 (9.3%) | 12 (9.3%) | 15 (11.6%) | 8 (6.2%) | 29 (22.5%) | 3 (2.3%) | 0 (0.0%) |
| Severe | 18 (47.4%) | 3 (7.9%) | 6 (15.8%) | 1 (2.6%) | 1 (2.6%) | 5 (13.2) | 0 (0.0%) | 0 (0.0%) |
| P value | 0.001 | 0.48 | 0.41 | 0.39 | 0.47 | 0.33 | 0.042 | 0.65 |
| OR 95% CI |
1.79
(1.25–2.55) |
0.87 (0.59 – 1.28) |
1.18 (0.80–1.74) |
1.19 (0.80–1.78) |
1.19 (0.74–1.90) |
1.20 (0.83–1.72) |
2.18
(1.03–4.63) |
0.78 (0.26–2.35) |
| Histologic inflammation | ||||||||
| Inactive | 145 (15.1%) | 205 (21.3%) | 127 (13.2%) | 109 (11.3%) | 45 (4.7%) | 216 (22.5%) | 2 (0.2%) | 6 (0.6%) |
| Mild | 155 (33.3%) | 58 (12.5%) | 43 (9.2%) | 35 (7.5%) | 14 (3.0%) | 106 (22.8%) | 8 (1.7%) | 5 (1.1%) |
| Moderate | 42 (37.8%) | 12 (10.8%) | 11 (9.9%) | 6 (5.4%) | 3 (2.7%) | 26 (23.4%) | 1 (0.9%) | 0 (0%) |
| Severe | 1 (33.3%) | 0 (0%) | 1 (33.3%) | 0 (0%) | 0 (0%) | 0 (0.0%) | 0 (0%) | 0 (0%) |
| P value | 0.007 | 0.020 | 0.23 | 0.07 | 0.15 | 0.84 | 0.10 | 0.94 |
| OR 95% CI |
1.67
(1.15–2.43) |
0.61
(0.41–0.93) |
0.77 (0.50–1.18) |
0.65 (0.41–1.03) |
0.66 (0.37–1.16) |
0.96 (0.66–1.41) |
2.23 (0.85–5.86) |
0.96 (0.35–2.63) |