Double-nylon purse-string suture in closing postoperative wounds following endoscopic resection of large (≥ 3 cm) gastric submucosal tumors

Table 1 Characteristics and outcomes of the 85 double-nylon purse-string sutures performed to close the postoperative wound of gastric submucosal tumors after endoscopic full-thickness resection

	Total population, n = 85
Sex, n (%)
Male	33 (38.82)
Female	52 (61.18)
Location of the lesion, n (%)
Fundus of the stomach	36 (42.35)
Body of the stomach	49 (57.65)
Lesion size, n (%)
≥ 3 cm, < 4 cm	58 (68.24)
≥ 4 cm, < 5 cm	27 (31.76)
Mean (cm)	3.63 ± 0.54
Histopathology, n (%)
Gastrointestinal stromal tumor	59 (69.41)
Fusiform cell type	52
Mixed type	7
Leiomyoma	23 (27.06)
Neurilemmoma	3 (3.53)
Operation time
< 60 min	26 (30.59)
≥ 60 min, < 120 min	57 (67.06)
≥ 120 min	2 (2.35)
Mean (min)	69.63 ± 21.09
Closure time
< 20 min	12 (14.1)
≥ 20 min, < 30 min	44 (51.762)
≥ 30 min	29 (34.12)
Mean (min)	26.73 ± 6.89
Closure time, second nylon rope purse-string suture
< 5 min	15 (17.65)
≥ 5 min, < 10 min	67 (78.82)
≥ 10 min	3 (3.53)
Mean (min)	5.98 ± 1.67
The number of metal titanium clips
6	41 (48.24)
7	32 (37.65)
8	10 (11.76)
9	2 (2.35)
Mean	6.68 ± 0.77
Adverse event, n (%)
Low fever	13 (15.29)
Abdominal pain	14 (16.47)
Postoperative hospital stays
Mean (d)	6.6 ± 0.74
Residual apparatus after operation, n (%)
3 months	28 (32.94)
6 months	13 (15.29)
12 months	4 (4.71)

Table 2 Treatment results of lesion characteristics and inter-group comparison of 85 patients with submucosal tumors grouped by location of the lesion subgroup

	Fundus of the stomach, n = 36	Body of the stomach, n = 49	P value
Perforation	0	0
Abdominal pain	7	7	0.526
Low fever	6	7	0.763
Operation time
Mean (min)	69.95 ± 15.72	69.41 ± 24.29	0.398
Closure time, single-nylon rope purse-string suture
Mean (min)	25.89 ± 6.19	27.35 ± 7.30	0.456
Closure time, second nylon rope purse-string suture
Mean (min)	6.22 ± 1.38	5.96 ± 1.31	0.437
The number of metal titanium clips
	6.42 ± 0.64	6.76 ± 0.85	0.056
Postoperative hospital stays
Mean (d)	6.56 ± 0.68	6.63 ± 0.77	0.736
Residual apparatus after operation
3 months	12	16	0.947
6 months	6	7	0.763
12 months	2	2	0.874

Table 3 Treatment results of lesion characteristics and inter-group comparison of 85 patients with submucosal tumors grouped by diameter subgroup

	≥ 3 cm, < 4 cm, n = 58	≥ 4 cm, < 5 cm, n = 27	P value
Perforation	0	0
Abdominal pain	5	9	0.011
Low fever	4	9	0.005
Operation time
Mean (min)	63.43 ± 16.12	82.96 ± 24.12	0.000
Closure time, single-nylon rope purse-string suture
Mean (min)	25.86 ± 6.25	28.59 ± 7.78	0.138
Closure time, second nylon rope purse-string suture
Mean (min)	5.95 ± 1.17	6.33 ± 1.64	0.470
The number of metal titanium clips
	6.21 ± 0.41	7.48 ± 0.69	0.000
Postoperative hospital stays
Mean (d)	6.47 ± 0.65	6.89 ± 0.83	0.019
Residual apparatus after operation
3 months	12	16	0.297
6 months	6	7	0.933
12 months	2	2	0.766