Using typical endoscopic features to diagnose esophageal squamous papilloma

Table 2 Each characteristic was evaluated independently for sensitivity, specificity, positive predictive value, negative predictive value, and accuracy in the squamous papilloma of the esophagus and other diagnostic groups (%)

	Sensitivity	Specificity	PPV	NPV	Accuracy
Whitish color	79.2	18.8	59.4	37.5	55.0
Exophytic growth	66.7	81.3	84.2	61.9	72.5
Wart-like projections	87.5	68.8	80.8	78.6	80.0
Surface vessel crossing on NBI	79.2	75.0	82.6	70.6	77.5
Combination of	62.5	87.5	88.2	60.9	72.5
exophytic growth,
wart-like shape and surface vessel crossing

NBI: Narrow band imaging; PPV: Positive predictive value; NPV: Negative predictive value.