Table 1.

Main features of enrolled patients

Patient number	Age	Sex	Surgical procedure	Relatives with FAP
1	49	F	Surgical polypectomy/duodenotomy	Brother
2	34	M	Endoscopic polypectomy	Mother
3	62	M	Duodenal resection	Daughter
4	29	F	Endoscopic polypectomy	Father, sister
5	32	M	Ampullectomy	Mother
6	35	F	Duodenal resection	Father, brother
7	46	M	Surgical polypectomy/duodenotomy	Father
8	59	M	Ampullectomy	Mother, son
9	58	F	Duodenal resection	Father, daughter
10	51	F	pancreatoduodenectomy	Mother, sister
11	46	M	Ampullectomy	Mother, daughter, sister
12	47	M	Surgical polypectomy/duodenotomy	Brother
13	33	F	Surgical polypectomy/duodenotomy	Mother
14	58	M	pancreatoduodenectomy	Mother, sister
15	24	F	Ampullectomy	Father, aunt
16	51	M	Ampullectomy	Sister
17	32	M	Endoscopic polypectomy	Mother, brother
18	29	F	Endoscopic polypectomy	Mother
19	31	M	Ampullectomy	Father
20	64	M	pancreatoduodenectomy	Mother, son
21	58	M	Ampullectomy	Brother
22	46	M	Surgical polypectomy/duodenotomy	Father, brother