Development and validation of a model to determine risk of refractory benign esophageal strictures

Table 7 Characteristics of 57 patients with refractory benign esophageal strictures

Category	N (%) / M (range)	Success (n = 27)	Failure (n = 30)	P
Sex
Female	18 (31.5%)	9	9	0.787
Male	39 (68.5%)	18	21
Age (yr)	60 (16-75)	58 (16-75)	60.5 (16-74)	0.472
Etiology
Post-ESD/ESTD	23 (40.4%)	11	12	0.003
Postoperative	23 (40.4%)	7	16
Caustic	8 (14%)	8	0
Other*	3 (5.2%)	1	2
Location of strictures
Cervical	10 (17.5%)	5	5	0.135
Thoracic	44 (77.2%)	22	22
Ventral	3 (5.3%)	0	3
Number of strictures
1	41 (71.9%)	16	25	0.351
2	11 (19.3%)	7	4
3 and more	5 (8.8%)	4	1
Length of strictures (cm)	2 (0.5-10)	3 (0.5-10)	2 (0.5-10)	0.105
Diameter of strictures (mm)	4 (1-8.5)	4 (1-8.5)	4 (0.5-8.5)	0.240
Times	7 (5-28)	6 (5-19)	7.5 (5-28)	0.129
Endoscopic therapy
Stenting + dilation	16 (28%)	6	10	0.043
Dilation only	41 (72%)	21	20

RBES: Refractory benign esophageal strictures; ESD: Endoscopic submucosal dissection; ESTD: Endoscopic submucosal tunnel dissection.