Pigment gallstones usually not seen in:: (A) Gilbe's syndrome, (B) Alcoholic cirrhosis, (C) Cystic fibrosis, (D) Clofibrate therapy
Answer is D. Clofibrate therapy: Increased biliary secretion of cholesterol, leads to cholesterol gallstones. Pigment stones are more common in patients who have chronic hemolytic states), liver cirrhosis, Gilbe's syndrome, or cystic fibrosis. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 2618