A hardened deposit of fluid in the gallbladder, a small organ under the liver.


Gallstones are hardened deposits of digestive fluid that can form in the small organ under the liver (gallbladder).


Gallstones can vary in size and number and may or may not cause symptoms.


People who experience symptoms usually require gallbladder removal surgery. Gallstones that don't cause symptoms usually don't need treatment.

© 1998-2023 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. | Terms of Use