The diagnosis is made, in part, by ruling out other diseases of the biliary system -- for example, if there are no stones in the gallbladder or biliary system.
Christian Stone, MD, Division of Gastroenterology, Washington University in St. Louis, School of Medicine, St. Louis, MO. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.