Texture and color enhancement imaging in magnifying endoscopic evaluation of colorectal adenomas

Table 1 Clinicopathological characteristics of patients and adenomas

Patients, n	37
Age, mean (range, SD), yr	59.1 (41-79, 9.0)
Sex, male/female, n	19/18
Adenomas, n	61
Location,cecum/ascending/transverse/descending/sigmoid/rectum, n	5/8/35/3/10/0
Size, mean (range, SD), mm	4.2 (1-12, 2.3)
Morphology1, Ip/Is/IIa/IIb, n	2/6/48/5
Histological subtype, tubular/villous, n	61/0
Dysplasia, low-grade/high-grade, n	61/0

¹Morphology was performed according to the Paris endoscopic classification of neoplastic lesions.

Table 2 Visibility scores of tumor margin, vessel pattern of Japan narrow band imaging Expert Team classification, and surface pattern of Japan narrow band imaging Expert Team classification for white light imaging, texture and color enhancement imaging, narrow band imaging, and chromoendoscopy

	WLI	TXI	NBI	CE	WLI vs TXI, P value	TXI vs NBI, P value	TXI vs CE, P value
Tumor margin
All, mean (SD)	2.86 (1.02)	3.47 (0.79)	3.76 (0.52)	3.52 (0.84)	< 0.001	< 0.001	0.21
Expert, mean (SD)	2.85 (0.96)	3.57 (0.66)	3.81 (0.43)	3.64 (0.70)	< 0.001	< 0.001	0.14
Nonexpert, mean (SD)	2.86 (1.08)	3.37 (0.90)	3.72 (0.59)	3.39 (0.94)	< 0.001	< 0.001	0.73
Vessel pattern
All, mean (SD)	2.17 (0.90)	3.05 (0.79)	3.79 (0.47)	2.47 (0.87)	< 0.001	< 0.001	< 0.001
Expert, mean (SD)	2.31 (0.87)	3.24 (0.67)	3.80 (0.41)	2.57 (0.85)	< 0.001	< 0.001	< 0.001
Nonexpert, mean (SD)	2.03 (0.90)	2.86 (0.85)	3.78 (0.52)	2.37 (0.88)	< 0.001	< 0.001	< 0.001
Surface pattern
All, mean (SD)	1.95 (0.79)	2.89 (0.85)	3.67 (0.55)	2.75 (0.90)	< 0.001	< 0.001	0.002
Expert, mean (SD)	1.92 (0.74)	2.96 (0.78)	3.70 (0.47)	2.67 (0.81)	< 0.001	< 0.001	< 0.001
Nonexpert, mean (SD)	1.97 (0.83)	2.83 (0.92)	3.64 (0.61)	2.83 (0.97)	< 0.001	< 0.001	0.94

The visibility score was defined as follows: score 4, excellent (easily detectable); score 3, good (detectable with careful observation); score 2, fair (hardly detectable without careful examination); score 1, poor (not detectable without repeated careful examination). NBI: Narrow band imaging; JNET: Japan NBI Expert Team; WLI: White light imaging; TXI: Texture and color enhancement imaging; CE: Chromoendoscopy.