Sedimentary gallstones are stones inside the patient’s gallbladder that look like sediment. They may be large, such as the size of a grain of rice or a green bean, and are multiple. Sedimentary gallstones are usually very numerous and may be deposited underneath the bile in the gallbladder, while small sedimentary gallstones may drain into the patient’s intestines along the cystic duct and common bile duct on their own. If the sedimentary gallstones are large, such as the size of a green bean or a grain of rice, they may cause abdominal pain in the patient during the process of draining, such as a significant increase in pain that is transient in nature and may lead to fever and also transient jaundice. Therefore, surgery is usually required after a clear diagnosis of sedimentary gallstones, because the process of stone removal may also lead to acute pancreatitis, which can be very serious.