In the end, hehe, it was a medical doctor who greenlit the procedure. Patients don't get to decide their own treatment trajectory, but they can certainly respond enthusiastically when the Certified Medical Doctor suggests it as a possible route.

And yes, I was bleeding heavily out my ass and had recurrent stomach and intestinal pain for months that went away and then came back the next year. Not as if I went in for a cut finger and demanded an anal probe for it.