Hi Mac, Not having pain does not mean that u r not having a problem.. many a times fistula remains painless but if the pus is blocked or obstructed u may start feeling severe pain.. so, its better to get rid of fistula. Yes, all kind of Fistula can be cured by Kshar Sutra Therapy, but duration of treatment depends on the type & extent of fistula.. U can send me all of ur surgery papers on my email id.. A snap of ur Fistula will be more helpful , u can see Gallery section of my website to knw hw to take a snap.. ok.. All d Best..