Malignant Tumors in Choledochal Cysts

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Abstract
Between 1960 and 1975, 17 patients with congenital cystic dilatation of the common bile duct (choledochal cyst) were treated. Three were associated with malignant tumors in the cysts and 1 was with carcinoma of the gallbladder. Preoperative diagnosis of adenocarcinoma in the choledochal cyst was established in 1 patient by cytologic examination of the bile which was obtained during the procedure of endoscopic pancreaticocholangraphy (EPCG) and percutaneous transhepatic cholangiography (PTC). Definitive treatment of choledochal cysts associated with malignant tumors in the biliary tract was accomplished by excision of the cysts with tumors and choledochojejunostomy in 2 patients, by cystodudodenostomy following external drainage in 1 and cholecystectomy with resection of invaded transverse colon in 1 with cancer of the gallbladder. Successful excision of choledochal cysts in 11 patients including 3 cases associated with malignant tumors in the biliary tract during the last 15 yr period is the basis of this report.