Ligation-assisted endoscopic submucosal resection following unroofing technique for small esophageal subepithelial lesions originating from the muscularis propria

Table 1 Details of clinicopathological characteristics and clinical outcomes of 17 patients with small esophageal subepithelial tumors originating from the muscularis propria

Case	Sex/age (years)	Location	Size (mm)	Operation time (min)	En bloc resection	Complications	Pathological diagnosis	Follow-up (months)	Recurrence
1	M/54	Lower	12	8	Yes	None	GIST	9	No
2	M/73	Lower	3	14	Yes	None	Leiomyoma	8	No
3	F/66	Lower	5	14	Yes	None	Leiomyoma	8	No
4	F/44	Upper	6	15	Yes	None	Leiomyoma	5	No
5	M/58	Middle	8	22	Yes	None	Leiomyoma	18	No
6	F/57	Lower	6	10	Yes	None	Leiomyoma	3	No
7	M/68	Lower	7	9	Yes	None	Leiomyoma	5	No
8	M/39	Lower	5	12	Yes	None	Smooth muscle proliferation	9	No
9	F/35	Lower	9	9	Yes	None	Leiomyoma	13	No
10	M/26	Lower	13	18	Yes	None	Leiomyoma	15	No
11	F/46	Lower	8	13	Yes	None	Smooth muscle proliferation	17	No
12	M/41	Lower	5	11	Yes	None	Leiomyoma	18	No
13	M/51	Lower	8	13	Yes	None	Leiomyoma	22	No
14	F/42	Lower	10	10	Yes	None	Leiomyoma	33	No
15	M/41	Lower	4	7	Yes	None	Smooth muscle proliferation	34	No
16	F/50	Lower	7	10	Yes	None	Leiomyoma	22	No
17	F/61	Lower	11	13	Yes	None	GIST	2	No

M: Male; F: Female; GIST: Gastrointestinal stromal tumors.

Table 2 Summary of clinicopathological characteristics and clinical outcomes, n (%)

Summary of clinicopathological characteristics and clinical outcomes
Age/year (mean ± SD)	50.12 ± 12.65
Gender
Male	9 (52.9)
Female	8 (47.1)
Tumor size/mm
> 10	4 (23.5)
< 10	13 (76.5)
Mean size/mm (mean ± SD)	7.47 ± 2.83
Mean operation time/min	12.2
En bloc resection	17 (100)
Complications
Bleeding	0
Perforation	0
Others	0
Pathological diagnosis
GIST (very low risk)	2 (11.8)
Leiomyoma	12 (70.6)
Others	3 (17.6)
Follow-up duration/month (mean ± SD)	14.18 ± 9.62
Recurrence	0

GIST: Gastrointestinal stromal tumors.