Image-enhanced endoscopy for diagnosis of colorectal tumors in view of endoscopic treatment

Table 1 Reports about image-enhanced endoscopy without magnification for differentiation between neoplastic polyps and non-neoplastic polyps (%)

Ref.	System	No. of cases	Accuracy	Sensitivity	Specificity	PPV	NPV
Henry et al[27]	NBI	126	90.0	93.0	88.0	93.0	91.0
Su et al[29]	NBI	110	92.7	95.7	87.5	93.0	92.1
Tischendorf et al[26]	NBI	100	89.0	87.9	90.5	92.7	84.4
Rex[28]	NBI	451	89.0	92.0	87.0	88.0	91.0
Lonqcroft-Wheaton GR	FICE	232	88.0	-	-	-	-
Pohl et al[61]	FICE	321	84.4	93.2	61.2	88.0	76.4
Yoshida et al[22]	FICE	151	89.4	89.4	88.0	93.4	83.3
Sato et al[34]	AFI	358	91.9	92.7	92.9	-	-

NBI: Narrow-band imaging; FICE: Flexible spectral imaging color enhancement; PPV: Positive predictive value; NPV: Negative predictive value; AFI: Autofluorescence imaging.