A small, hard, pathological concretion, composed chiefly of cholesterol, calcium salts, and bile pigments, formed in the gallbladder or in a bile duct.

• 胆结石一种在胆囊或胆道中形成的小且硬的病理上的结石，主要由胆固醇、盐酸钙和胆汁色素沉淀组成