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What is Brown pigment gallstones are formed due to: and explain in detail?
Characteristics of different types of gallstones and major risk factors for cholesterol gallstones Cholesterol stones Brown pigment stone Black pigment stone Main composition Cholesterol 50% bilirubin >50% bilirubin Colour Yellow-grey Brown Dark Brown-black Aetiology Cholesterol supersaturation Increased deconjugation of bilirubin glucuronides Increased biliary bilirubin load Ref: J Gastrointestin Liver Dis March 2011 Vol. 20 No 1, 9-11.