Magnifying Chromoendoscopy with Flexible Spectral Imaging Color Enhancement, Indigo Carmine, and Crystal Violet in Predicting the Histopathology of Colorectal Polyps: Diagnostic Value in a Scare-Setting Resource

Figure 1

Endoscopic capillary-vessel pattern classification (Teixeira et al.) [5]. (a)Type I: normal pattern composed of thin subepithelial capillary vessels with a linear shape and regular arrangement surrounding the mucosal crypts. (b).Type II: this pattern exhibits hypovascularity or marginal capillaries of a thicker diameter, curved, or straight but uniform, without dilatations, and the pericryptal arrangement is not remarkable. (c).Type III: numerous capillaries of thinner diameter, irregular and tortuous, with frequent point dilatations, and tapering like a spiral shape, showing remarkable periglandular arrangement. (d).Type IV: numerous long, spiral, or straight blood vessels with a thicker diameter, and sparse dilatations, running upright, surrounding the villous glands. (e).Type V: pleomorphism of capillaries and abnormal distribution and arrangement; numerous heterogeneous thick vessels with chaotic arrangement are the predominant.

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