Table1.

Summary of Non-polypoid Adenomas

Polyp #	Size (mm)	Histology	Grade	Location	Prospectively seen on 2D	Prospectively seen on 3D	Prospectively seen on combined 2D & 3D	Retrospectively Seen	Height Supine (mm)	H:W Ratio Supine	Height Prone (mm)	H:W Ratio Prone
1	8	TVA	Low	Cecum	No	No	No	Yes	.	.	2	0.33
2	8	TVA	Low	Cecum	No	No	No	Yes	3	0.30	3	0.27
3	5	TA	Low	Cecum	Yes	Yes	Yes	Yes	2	0.33	3	0.50
4	15	TA	Low	Transverse	No	Yes	Yes	Yes	3	0.50	3	0.60
5	10	TA	Low	Cecum	No	No	No	Yes	2	0.14	2	0.14
6	18	TA	Low	Transverse	Yes	No	Yes	Yes	3	0.38	.	.
7	5	TA	Low	Transverse	No	No	No	No			.	.
8	9	TVA	Low	Cecum	Yes	No	Yes	Yes	2	0.40	3	0.50
9	7	TA	Low	Descending	Yes	No	Yes	Yes	2	0.29	2	0.40
10	7	TA	Low	Ascending	Yes	No	Yes	Yes	2	0.33	2	0.29
11	5	TA	Low	Descending	No	Yes	Yes	Yes	.	.	3	0.75
12	5	TA	Low	Sigmoid	Yes	No	Yes	Yes	2	0.50	2	0.67
13	7	TA	Low	Cecum	No	Yes	Yes	No	.	.	.	.
14	6	TA	Low	Descending	Yes	No	Yes	Yes	2	0.50	2	0.50
15	11	TA	Low	Transverse	No	Yes	Yes	Yes	.	.	3	0.21
16	8	TA	Low	Ascending	Yes	No	Yes	Yes	1	0.17	.	.
17	8	TA	Low	Ascending	No	No	No	Yes	3	0.19	3	0.20
18	9	TA	Low	Transverse	No	No	No	Yes	.	.	3	0.33
19	5	TA	Low	Transverse	Yes	Yes	Yes	Yes	2	0.33	2	0.29
20	9	TA	Low	Cecum	Yes	Yes	Yes	Yes	3	0.43	2	0.33
21	25	TVA	High	Cecum	Yes	No	Yes	Yes	3	0.25	3	0.12

TA=Tubular adenoma

TVA=Tubulovillous adenoma

2D=Primary 2D interpretation

3D=Primary 3D interpretation

H:W=Height to width

Note: H:W ratio may be >50% at CTC as the morphologic appearance at colonoscopy was considered the gold standard.