“…7,8 Preoperative duplex marking of the SPJ was done selectively, according to the result of the diagnostic scan by surgeons in the present study, as mirrored by national data. 9 As in other studies, preoperative duplex marking of the SPJ has not been shown to improve outcomes. 10,11 It has been suggested that SSV surgery is more hazardous than GSV surgery, and that recurrence is more common.…”