I had this problem and wanted to find information and advice about it. I looked and posted on this board in lots of forums, but didn't have any luck. I am so pleased that I saw your request and I hope I can help.
I had surgery 2 months ago to remove my gallbladder because of polyps. I had an excellent surgeon, and he didn't hold back on telling me the full story about what can happen with them. I asked for the information and I was glad he told me straight. Most of the polyps I had were 1 cm in size. The thing is when they reach this size, this is the danger point for them to turn cancerous. Not all do of course, but this is the warning stage. There is no treatment if this happens, and the prognosis isn't good. I urgently advise you to do some research on this. You need to act quickly because they can turn nasty.
I have a lot of serious medical conditions and surgery is only an option for me in an emergency. This was an emergency for me to have my gallbladder removed becaue of the size of the polyps. I was given some quite scarey infromation on my own condition, so I acted accordingly.
I don't mean to frighten you but I wanted you to know about the urgency of this.
Hope this is of help to you.