Which pigment stones are associated with hemolytic anemia?

The association of pigment stones with hemolytic anemia is primarily linked to the production of bilirubin, which is a byproduct of the breakdown of red blood cells. In cases of hemolytic anemia, there's an increased destruction of red blood cells leading to elevated levels of unconjugated bilirubin in the body.

When this excess bilirubin gets processed by the liver, it can lead to the formation of pigment gallstones, particularly those known as "black stones." However, the color pigments of gallstones directly vary according to their composition. The green pigment stones are primarily formed from calcium salts of unconjugated bilirubin and are particularly associated with conditions that lead to increased bilirubin levels, such as hemolytic anemia.

Thus, the correct identification of pigment stones related to hemolytic anemia indicates an understanding of how dysfunctional red blood cell turnover impacts bilirubin metabolism and the subsequent formation of stones in the gallbladder or biliary system. These green pigment stones represent the body's response to excess bilirubin due to hemolysis, making them the correct answer in this context.