Do you mean a full scope, going a long way into the intestine? I've not had that done, but a couple of days after my surgery to create my ileostomy, the doctors were concerned I might have a [wiki2="Intestinal-Obstruction"]blockage[/wiki2], so a doctor first put his finger in and then a camera on a very small scope, to check just the [wiki2="Stoma"]stoma[/wiki2] opening. I've also had catheters inserted into my stoma.
None of this hurt; they told me the stoma tissue has no nerve endings so you won't feel anything, however I certainly felt the pressure of the touch - I guess that the sensations I felt were actually coming from the area around the stoma if it's true the stoma tissue can't feel.
I'm guessing what you're talking about is a bit more extensive though?
