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Gallstones


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Picture of gallbladder and gallstones

Gallstones develop when cholesterol and other substances in the bile form crystals that become hard stones in the gallbladder. The gallbladder is a small sac located just under the liver. Gallstones can form when too much cholesterol is in the bile or when the gallbladder does not empty properly.


Last Updated: July 15, 2011
Medical Review:
E. Gregory Thompson, MD - Internal Medicine

Arvydas D. Vanagunas, MD - Gastroenterology


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