large gallstone, gall bladder stone. result of gallstones. calculus of heterogeneous composition

abdomen anatomy background ball bile bilirubin black bladder body calcium calculus carbonic cholecystitis cholesterol closeup colic deposit digestion digestive disease duct ducts epithelium gall gallstone green health healthy hospital infection inflammation intestine laparoscopic large liver medicine mucus nutrition obstruction organ phosphate removal result round science size solid stone surgery white worms