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| Recommended surveil lance interval (yr) | Serrated adenomas | Characteristics | Conventional adenomas | |
|---|---|---|---|---|
| No grade | 10 | MVHPs GCHPs MPHPs |
||
| Low grade | 5 | SSAs/Ps | < 1 cm < 3 adenomas Low dysplasia < 20% villous component |
TAs |
| High grade | 3 | TSAs | ≥ 1 cm | TSAs |
| ≥ 3 adenomas | TAs | |||
| SSAs/Ps | High dysplasia | TVAs | ||
| ≥ 20% villous component | TVs |
