7 months back i had done an usg abdomen, it had shown a 2.9mm gallbladder polyp. I was asked to redo ultrasound after 6-7 mnths, today i did ultrasound at a different facility though, i told the radiologist the a gb polyp was discovered last time.. He said this time nothing seems to be there in your gbladder and it's perfectly normal... Does that mean that it has regressed? Or that it was a mistake in machine last time? Or could it be a gallstone which got dissolved? Or did this latest ultrasound miss something? And do I need to repeat usg again after 6 months or leave it be? Please guide me with above questions, Thank you.