I have one also, although it never protruded that much. It appeared about four or five years ago after one of the surgeries. I was getting a colonoscopy and showed my surgeon; it was one of his fellows who did it. He was surprised but said, "I can remove it now if you want, but it will bleed a bit." We decided to leave it. He too said it would be ejected, but it hasn't happened yet. However, I have grabbed it with some tweezers, pulled it a little, and snipped it off level with the surface with wire cutters a couple of times. Danger is my middle name 🤣, but for the last two years or so, it's not going anywhere, and what's left is pretty much level with the skin, although half of it is still in there. Me, I would open that loop a little and remove it like a fish hook, but that's me. If it doesn't trouble you, that's fine; let it be.