This episode will focus on the gallbladder and educate you on cholecystitis and other gallbladder related teaching. Cholecystitis - inflammation of the gallbladder; cholangitis - inflammation of the common bile duct; cholelithiasis - formation of stones in the gallbladder; choledocholithasis - stones formed in the common bile duct and cholecystostomy - drain into the gallbladder. See the similarity between the words.