Using typical endoscopic features to diagnose esophageal squamous papilloma

Table 1 Basic demographic and endoscopic features between squamous papilloma of the esophagus patients and the other diagnostic groups

Characteristic	SPE		Others		P value
	(n = 24)		(n = 17)
Age (yr)	48	(26-68)	53.3	(27-70)	0.197
Gender					0.014
Male	4	16.6%	9	53.9%
Female	20	82.7%	8	47.1%
Lesion character					0.383
Location (upp/med/inf)	5/13/6	21/54/25%	10/6/2001	5.9/58.8/35.3%
Size (mm)	3.8	(2-8)	3.2	(2-5)	0.098
Single lesion	22	92.0%	14	82.4%	0.369
Reason for EGD					0.533
Epigastric pain	15	62.5%	13	76.5%
Dysphagia	1	4.3%	1	5.9%
Acid regurgitation and/or heart burn	8	33.3%	3	17.6%

SPE: Squamous papilloma of the esophagus; EGD: Esophagogastroduodenoscopy.

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.