Is Surveillance Endoscopy Necessary after Colectomy in Ulcerative Colitis?

Table 1

Cases of definite dysplasia or cancer after ileo-rectal anastomosis.

Case	Age at onset	Age at IRA	IRA duration	Grade of dysplasia at endoscopy	Postoperative diagnosis	Survival
1	29	33	9	HGD	sm	Alive
2	57	58	19	LGD	sm	Alive
3	22	24	23	LGD	m(HGD)	Alive
4	56	58	20	LGD	—	Alive

HGD: high-grade dysplasia: IRA, ileo-rectal anastomosis: LGD: low-grade dysplasia;M:  mucosa; sm: submucosa.