@MrsPramm - Even though the alternative is sometimes surgery, it isn't always. It's important for patients to realize that a procedure with an endoscope isn't going to be completely pain free, and that it does have some risks. Every time you insert a foreign object into the human body there are risks.
So, if you want to explore other options before doing this, don't be afraid to say that. Don't turn it down if it's the best option, but be aware that there are other options.