How secure can we expect the surveillance policies to be after the implementation in T1 polyps with carcinoma?

Table 1 Risk factors for poor prognosis

Low risk	High risk
Well or moderately differentiated (G1-2)	Poorly differentiated (G3)
Free resection margins	Affected resection margins
Absence of lymphovascular invasion	Presence of lymphovascular invasion
Absent or low grade budding (Bd0-I)	Intermediate or high budding (Bd2-3)
-	Mucinous, micropapillary or signet ring type
Absence of Poorly differentiated clusters	Presence of Poorly differentiated clusters
MMI (muscularis mucosae intact)	MM2 (fragmented muscularis mucosae)
Submucosal invasion < 1000 µm	Submucosal invasion > 1000 µm