I apologize for misreading your post initially and thinking it had gone to the peritineum. Truly remorseful, the last thing you needed was a bunch of information that didn’t really pertain to you.
Worrying about that thing growing back is something we all do, unless it does, then we have new worries. I try not to let the worry of tomorrow steal my joy today. Have you ever asked your doctor outright about the ramifications of this thing?