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Classification of Colorectal Polyps.
| Histological Classification | Polyp Type | Malignant Potential |
| Non-neoplastic | Hyperplastic polyps | No |
| Hamartomas | ||
| Lymphoid aggregates | ||
| Inflammatory polyps | ||
| Neoplastic (adenomas) | Tubular adenomas (0–25% villous tissue) | Yes |
| Tubulovillous adenomas (25–75% villous tissue) | ||
| Villous adenoma (75–100% villous tissue) |
