BSIP, RASTOIN / SCIENCE PHOTO LIBRARY BSIP, RASTOIN / SCIENCE PHOTO LIBRARY
Gallstone surgery. Close-up of a surgeon's gloved hands placing extracted gallstones in a bowl. Gallstones are hard deposits of cholesterol and bile salts that form in the gallbladder. This is a small organ underneath the liver, which is responsible for the storage of bile. Bile is released during digestion to emulsify fats. Gallstones form when the composition of the bile changes, usually due to an excess of cholesterol. It is most common in the obese. The stones can cause pain and block body passages. They can either be removed surgically, by drugs that break them down, or by focused ultrasound.
Model release not required. Property release not required.