Narrow-band imaging endoscopy with and without magnification in diagnosis of colorectal neoplasia

Table 1 Comparison of narrow-band imaging endoscopy and pathological diagnosis

	Narrow-band imaging diagnosis	Pathological diagnosis				Total
		Hyperplastic polyp	Tubular adenoma	Villous adenoma	Adenocarcinoma
Pit pattern	II	38	9	0	0	47
	IIIs	0	0	0	1	1
	IIIL	4	51	1	0	56
	IV	0	0	6	0	6
	V	0	0	0	13	13
Capillary pattern	CP1	35	4	0	0	39
	CP2	7	56	7	0	70
	CP3	0	0	0	14	14

Table 2 Diagnostic efficacies of narrow-band imaging endoscopy with and without magnification

Pathological diagnosis	NBI without magnification		NBI with magnification
	Consistent	Inconsistent	Consistent	Inconsistent
Hyperplastic polyp	21	3	12	1
Adenoma	37	4	20	2
Adenocarcinoma	5	0	8	0
Total	63	7	40	3

NBI: Narrow-band imaging.