Comparison between Submucosal Tunneling Endoscopic Resection and Endoscopic Submucosal Dissection for Prepyloric Submucosal Tumors: A Case-Matched Controlled Study

Table 1

Baseline characteristics of the 24 patients undergoing P-STER or ESD for prepyloric SMTs.

	P-STER ()	ESD (12)	-value
Age, mean (range), years	51.00 (28.00–77.00)	46.50 (28.00–60.00)	0.371
Gender (male/female)	5/7	3/9	0.098
Lesion size, median (range), cm	1.75 (1.00–3.00)	1.50 (1.20–3.50)	0.890
Pathology results, n (%)
Ectopic pancreas	5 (41.67)	5 (41.67)	1.000
Gastrointestinal stromal tumor	3 (25.00)	3 (25.00)
Leiomyoma	1 (8.33)	1 (8.33)
Lipomyoma	1 (8.33)	1 (8.33)
Glomangioma	1 (8.33)	1 (8.33)
Inflammatory mass	1 (8.33)	1 (8.33)
Distance from pylorus ring, median (range), cm	2.5 (0–3)	2.5 (0–3)	1.000
Location, n (%)
3 o’clock	2 (16.67)	2 (16.67)	1.000
4 o’clock	3 (25.00)	3 (25.00)
6 o’clock	5 (41.67)	5 (41.67)
7 o’clock	1 (8.33)	1 (8.33)
8 o’clock	1 (8.33)	1 (8.33)
Lesion origin, n (%)
Submucosal layer	5 (41.67)	5 (41.67)	1.000
Muscularis propria layer	7 (58.33)	7 (58.33)
The appearance under EUS, n (%)
High-medium mixed echo	7 (58.33)	6 (50.00)	0.682
Homogeneous low echo	5 (41.67)	6 (50.00)

P-STER: prepyloric submucosal tunneling endoscopic resection; ESD: endoscopic submucosal dissection; SMTs: submucosal tumors; EUS: endoscopic ultrasonography.