Narrow-Band Imaging Colonoscopy to Assess Mucosal Angiogenesis in Ulcerative Colitis

Table 3

Comparisons of the microvascular density/VEGF staining in the mucosal patterns ().

	Classification of mucosal pattern using NBI
	Clear ()	Obscure ()	Absent ()	Absent ()
				Crypt opening ()	Villous ()
Microvascular density (vessels/field)			^#
VEGF (staining index)			^#

NBI: narrow-band imaging; VEGF: vascular endothelial growth factor. vs. clear pattern. ^# vs. obscure pattern.