You've asked my why your case is different. Every 'body' is
different. If you say that you were clear of stones by ultrasound
maybe then it was a lot of substance, sludge, grainy buildup, stones,
etc. in your ducts and liver. Whatever the case it is great that you
are now 'technically pain free' as you say. Congraduations on your
accomplishments and good dieting. We are all searching for the same
thing - pain-free, happy, and healthy living. I hope that you stay
that way. You may be one of the 50% who don't have to worry about
reoccuring stones. Actually, since you have said that you think your
gallbladder was not the problem and it was a sluggish liver then your
problem was definitely different than people suffering from gallstone
colic. Whatever the case, stay away from the pain and be proud of
yourself for your choices.
Also, thank you for that successful flush story. Great motivation.