<prompt> Not true of cholelithiasis -Billiary fistula is a complication gall stoneMore common in femaleClofibrate therapy is a predisposing factorIleal resection has no effect on gall stone formation  <response>: Ans. is d i.e., Ilea refection has no effect on gall stone formation Pathogenesis of Cholesterol gall stoneso There are three elements necessary for the formation of cholesterol gall stonesLithogenic bileNucleation andStasis or gall bladder hypomotilityo Ideal diseaseresection decreases or impairs enterohepatic circulation of bile salts leading to lithogenic bile. 