Normal biliary physiology and anatomy -- Pathophysiology of gallstones -- History of medical and surgical management of acute cholecystitis -- The diagnosis of acute cholecystitis -- The use of imaging in gallbladder disease -- The use of routine and selective intraoperative cholangiography -- Non-operative management of acute cholecystitis -- Surgical management of acute cholecystitis -- Robotic cholecystectomy -- Infectious considerations in complicated acute cholecystitis -- Gallstone pancreatitis -- Management of acute cholecystitis patient in the critically ill patient -- Damage control techniques in acute cholecystitis -- Indications for and considerations surrounding interval cholecystectomy -- The utility of endoscopic techniques in simple and complicated acute cholecystitis -- Acalculous cholecystitis -- Gallbladder cancer presenting as acute cholecystitis.