What are multiple folds in gall bladder?

Not sure . I'm not sure what you're referring to. Larger gallballders (GB) can be folded where they extend beyond the liver's edge. There are valves within the tube connecting the GB to the main tube coming out of the liver that can be described as folds. Best to ask the radiologist that issued the report, as this is not typical language or an anatomic entity encountered. Hope this helps!