Table 2. Description of secondary cancers.

Patient no.	Age at primary surgery	Group	Age at diagnosis of secondary cancer	Number of pretreatment endoscopy reports available	Time since last endoscopy (mo)	Findings in previous procedures	Endoscopic/surgical treatment	Pathology	Vienna classification
1	13	IAA	30	1	1		Endoscopic mucosectomy	T is	4.2
2	49	IRA	70	0			Abdominoperineal resection	Not available
3	28	IRA	50	4	36	High-grade dysplasia	Abdominoperineal resection	T is	4.2
4	15	IRA	50	1	0	Adenocarcinoma	Abdominoperineal resection	T3N0M0
5	21	IRA	24	5	6	High-grade dysplasia	Ileoanal pouch	Not available
6	54	IRA	54	0			Abdominoperineal resection	Not available
7	41	IRA	70	0			Abdominoperineal resection	Not available
8	24	IRA	44	0			Abdominoperineal resection	T4N1M0
9	38	IRA	54	0			Abdominoperineal resection	Not available
10	20	IRA	48	0			Abdominoperineal resection	T2N0M0
11	39	IRA	56	0			Ileoanal pouch	Not available
12	27	IRA	50	0			Ileoanal pouch	Not available
13	27	IRA	71	3	6	High-grade dysplasia	Abdominoperineal resection	T is	4.2

IRA, ileorectal anastomosis.