Gallstones

Gallstones are hard, pebble-like deposits that form inside the gallbladder, a small sac under the liver, which stores bile (a liquid produced by the liver, stored in the gallbladder, and released into the small intestine where food is digested) made by the liver. Gallstones are formed when cholesterol and other things found in bile make stones, and can form when the gallbladder does not empty as it should.

 Gallstones do not need treatment unless they block the bile duct (see picture).

Symptoms
 Abdominal pain, fever, obesity, right upper quadrant tenderness, jaundice