In vivo pilot study into superficial microcirculatory characteristics of colorectal adenomas using novel high-resolution magnifying endoscopy with blue laser imaging

Table 1 Characteristics of patients (n = 11) with colorectal polyps (n = 16)

Variables	n (%)
Sex
Male	5 (45.5)
Female	6 (54.5)
Age (mean ± SD) (yr)	59.94 ± 7.40
Lesion size (mean ± SD) (mm)	8.19 ± 3.95
Polyp morphology
0-Isp	4 (25)
0-IIa	11 (68.7)
SSL	1 (6.3)
JNET classification
JNET 2a	13 (81.2)
JNET 2b	3 (18.8)
Pathology tubular adenoma	16 (100)

SSL: Sessile serrated lesions; JNET: Japanese narrow-band imaging expert team.

Table 2 Comparison of superficial microcirculatory characteristics between adenoma and surrounding mucosa

	Adenoma	Surrounding mucosa	t	P value
MVD (μm/μm2)	0.95 ± 0.18	1.17 ± 0.28	2.640	0.019
MVW (μm)	5.11 ± 1.19	4.16 ± 0.76	5.503	< 0.001
WSD (μm)	11.94 ± 3.44	9.04 ± 3.74	4.494	< 0.001
BFV (μm/s)	709.74 ± 213.28	1256.51 ± 383.31	4.986	< 0.001

MVD: Microcirculation vessel density; MVW: Mean vessel width; WSD: Width standard deviation; BFV: Blood flow velocity.