1 Anatomy of the gallbladder and biliary tract.- 2 Pathophysiology and diagnosis of acute calculous cholecystitis.- 3 Pathophysiology and diagnosis of acute acalculous cholecystitis.- 4 Guidelines for the management of acute cholecystitis.- 5 Tokyo Guidelines and their limits.- 6 Preoperative evaluation and management of acute cholecystitis: Optimal timing and surgical approach.- 7 Preoperative evaluation and decision making. When to operate and...