Choledochocele or type III choledochal cyst is a rare lesion of the biliary tree. It may be of acquired or congenital etiology and can assume one of two anatomic variants. Either the common bile duct and the pancreatic duct enter the choledochocele together, or it is formed by the common bile duct alone with the pancreatic duct entering as a separate opening. The most frequent presenting symptoms are abdominal pain, pancreatitis, and jaundice. Traditional therapy has been either marsupialization of the cyst into the duodenum or complete surgical excision. This paper cites the eighth patient reported in the English-language literature whose choledochocele was treated endoscopically. It is the authors' opinion that either an endoscopic papillotomy or an endoscopic fistulotomy with extension of the incision over the cyst is the simpler and perferred method of treatment.