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Histological characteristics of the polyps in both groups of patients
| Polyp | Turkish | Authentic Dutch |
|---|---|---|
| Tubular adenoma | ||
| Low-grade dysplasia | 16 | 933 |
| Moderate dysplasia | 7 | 242 |
| High-grade dysplasia | 1 | 19 |
| Tubulovillous adenoma | ||
| Low-grade dysplasia | 1 | 29 |
| Moderate dysplasia | 1 | 110 |
| High-grade dysplasia | – | 14 |
| Villous adenoma | ||
| Low-grade dysplasia | – | 70 |
| Moderate dysplasia | 1 | 134 |
| High-grade dysplasia | – | 22 |
| Inflammatory polyp | 2 | 48 |
| Unknown histology | 8 | 521 |
| Haemangioma | 1 | |
| Hyperplastic polyp | 1 | 566 |
