Table 2.

Results

Total patients	N = 40
Primary success, n (%)	40 (100)
Time symptoms occurred, months median, (IQR)	7 (5–11)
Operation time, minutes, median (IQR)	45 (25–80) min
Complications	1 (2.5%)
Length of staya, median(IQR)	1 (1–1) day
Recurrence	7 (17.5%)
Time to recurrence, months, median (IQR)	3 (2–8) m
Management of recurrence	5 patients had re-dilatation 2 patients had 3 sessions

IQR intraquartile range, Q1–Q3

^aThe length of stay was defined as hospital stay after operation. Combined surgery cases were excluded