Endoscopic Electrocoagulation/Chemical Ablation + Bioglue Occlusion

It is mostly used for selected cases with smaller fistulas, relatively simple passages, no active infection, and permissible tissue conditions, or for those who are not suitable for larger surgery. Suitability depends on the location and length of the fistula, history of radiation damage, previous treatment response, and overall health status, as determined by specialist assessment.