TY - CHAP M1 - Book, Section TI - Gallbladder and the Extrahepatic Biliary System A1 - Pham, Thai H. A1 - Hunter, John G. A2 - Brunicardi, F. Charles A2 - Andersen, Dana K. A2 - Billiar, Timothy R. A2 - Dunn, David L. A2 - Hunter, John G. A2 - Matthews, Jeffrey B. A2 - Pollock, Raphael E. PY - 2015 T2 - Schwartz's Principles of Surgery, 10e AB - The physiology of the gallbladder and sphincter of Oddi is regulated by a complex interplay of hormones and neuronal inputs designed to coordinate bile release with food consumption. Dysfunctions related to this activity are linked to the development of gallbladder pathologies described in this chapter.In Western countries, the most common type of gallstones are cholesterol stones. The pathogenesis of these stones relates to supersaturation of bile with cholesterol and subsequent precipitation.Laparoscopic cholecystectomy has been demonstrated to be a safe and effective alternative to open cholecystectomy and has become the treatment of choice for symptomatic gallstones. Knowledge of the various anatomic anomalies of the cystic duct and artery is helpful in guiding the dissection of these structures as well as avoiding injury to the common bile duct during cholecystectomy.Common bile duct injuries, although uncommon, can be devastating to patients. Proper exposure of Calot’s triangle and careful identification of the anatomic structures are keys to avoiding these injuries. Once a bile duct injury is diagnosed, the best outcomes are seen at large referral centers with experienced biliary surgeons.The main risk factor for gallbladder disease in Western countries is cholelithiasis. The main complications include cholecystitis, choledocholithiasis, cholangitis, and biliary pancreatitis. In addition, cholelithiasis plays the role as the major risk factor for the development of gallbladder cancer.Carcinoma of the gallbladder and bile duct generally have a poor prognosis because patients usually present late in the disease process and have poor response to chemotherapy and radiation therapy. Surgery offers the best chance for survival and has good long-term survival in patients with early-stage disease. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesssurgery.mhmedical.com/content.aspx?aid=1117750486 ER -