 cholangitis) and may be removed along with the gallbladder during surgical treatment (cholecystectomy).Calot's triangle, containing the cystic artery, may also contain an accessory right hepatic artery or anomalous sectoral bile ducts.As a result dissection in the triangle of Calot is ill-advised until the lateral-most structures have been cleared and identification of the cystic duct is definitive.