Visualization of Laterally Spreading Colorectal Tumors by Using Image-Enhanced Endoscopy

Table 2

Backgrounds of the LST-NG lesion evaluated by AFI in group A.

	Quality of visualization
	Good	Poor	𝑃
Macroscopic type
Flat elevated	32	9	0.30*
Flat or flat depressed	4	2
Lesion size (mm)
Median	25	35	<0.05**
Range	20–50	20–60
Location
Rectum	6	1	0.34*
Cecum or colon	30	10
Pathological finding
Adenoma	4	2	0.30*
Adenocarcinoma	32	9

*Fisher’s exact test.
**Mann-Whitney test.