Table 2. Histological findings on colonic polyps in the right vs. left colon for 3,045 polyps found on 2,400 patients who underwent colonoscopy.
| Histology | Left colon (n=1,409) | Right colon (n=1,636) | P-value |
|---|---|---|---|
| Hyperplasic | 50.7% (715) | 29.8 % (n=303) | <0.0001 |
| Adenoma | 39.3% (n=553) | 69.4% (n=1,135) | <0.0001 |
| Advanced adenoma | 1.9% (n=27) | 1.5% (n=24) | NS |
| Adenocarcinoma | 0.4% (n=6) | 0.6% (n=10) | NS |
| Other | 7.7% (n=108) | 10% (n=164) | 0.026 |
NS, non-significant.
Other: benign mucosa, inflammation, leiomyoma, or lymphoid tissue.