Tread carefully and if you try to flush it out also tread carefully and make sure you are doing the flush exactly correct. Please read Andreas Morit'z amazing gb/ Liver Flush before trying to get rid of that thing. That being said, I have read the book and stones larger than that have been successfully flushed out. Again, you really want to make sure you are doing the flush correctly to get the results you want. Many just go with the surgery because flushing and cleansing is not very American, it'a anti-lazy, it takes a little time, patience, fortitude, and willingness to learn to listen to your body, and learn, and definitely .. eating habits, it took you a lifetime to get to this point.