Objective To study the relationship between the bacterial spectrum difference of gallbladder mucosa and choledochus bile and clinical prognosis of gallstone pancreatitis.
It is most likely that cholesterol and bile acid hyposecretion make the AKR strain susceptible to the development of fatty livers and resistant to gallstone formation.
Since they're made partly of calcium, they'll usually be radiopaque, meaning you can see them on x-ray, here's an example showing pigmented gallstones on x-ray.
Risk factors for developing gallstones include things like female sex, obesity, pregnancy, and age, sometimes remembered by the 4 F's—female, fat, fertile, and forty.
If the other organ is the small intestine, then this is called a cholecystoenteric fistula, and the fistula becomes a direct route for gallstones to enter the bowel.
If the gallstone is brown pigmented, it's often a sign of gallbladder or biliary tract infection, and often the stones have even ventured outside gallbladder and into the bile ducts.