CHOLELITHIASIS

CHOLELITHIASIS is a topic covered in the Harrison's Manual of Medicine.

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There are two major types of gallstones: cholesterol and pigment stones. Cholesterol gallstones contain >50% cholesterol monohydrate. Pigment stones have <20% cholesterol and are composed primarily of calcium bilirubinate. In the United States, 80% of stones are cholesterol and 20% are pigment.

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