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Normally a balance of bile salts, lecithin and cholesterol keep gallstones from forming. If there are abnormally high levels of bile salts or, more commonly, cholesterol, stones can form. Symptoms usually occur when the stones block one of the biliary ducts or gallstones may be discovered upon routine x-ray or abdominal CT study.

Review Date: 9/25/2000 12:00:00 AM Reviewed By: J. Gordon Lambert, MD, Associate Medical Director; G. Eric Morgan, MS3; RxRemedy

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