TABLE 2.

Clinical and procedural outcomes of the endoscopic treatment in 19 children.

Technical success, n (%)	18 (94.7%)
Total procedure duration, mean (SD), min	76.3 (14.2)
Estimated membrane thickness, mean (SD), mm	3.86 (0.89)
Diameters of initial membrane opening, mean (SD), mm	2.97 (2.87)
Post-operative diameters of membrane opening, mean (SD), mm	9.78 (1.27)
Post-operative complications, n (%)
Bleeding	0
Perforation	0
Jaundice	0
Average hospitalization time, mean (SD), d	4.57 (1.01)
Muscular layer contained in the membrane specimens, n (%)	7 (36.8%)
Follow-up period, mo [range]	10–73
Symptoms of vomiting reappeared, n (%)	0
The 6-month postoperative BMI, mean (SD), kg/m2	16.2 (3.7)
Adverse events, n (%)
Need for surgical revision	1 (5.3%)
Recurrent stenosis	3 (15.8%)

BMI = body mass index; SD = standard deviation.