Table 2.

Probe devices used to cannulate H fistula pre-operatively

Cannulation method	References
Guidewire	Amat [13], Butterworth [14], De Schutter [15], Sim [16], Antao [17], Allal [18]
Fogarty	Aziz [19], Elebute [20], Riazulhaq [21]
Ureteric stent	Trobs [22]
Ureteric catheter	Ng [8], Garcia [23], Rothenberg [12]
Bronchoscope	Tarcan [24], Goyal [25] we described fibreoptic illumination and entering the fistula with a 2.2 mm scope preoperatively as targeted identification