Korean J Pancreas Biliary Tract.  2021 Jan;26(1):58-62. 10.15279/kpba.2021.26.1.58.

Successful Endoscopic Resection of Tubulovillous Adenoma Arising in Choledochocele

  • 1Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Catholic University of Korea, Daejeon, Korea
  • 2Department of Pathology, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea


Choledochocele is the least common type of choledochal cyst. Choledochocele has a potential for carcinogenesis, but only a handful of cases with concurrent ampullary carcinoma have been reported. We recently experienced a case of choledochocele with tubulovillous adenoma with focal high-grade dysplasia, which was successfully and completely resected en bloc via endoscopic papillectomy. Prior to endoscopic papillectomy, the endoscopic ultrasonography was able to accurately diagnose the ampullary tumor arising in choledochocele. Herein, we would like to report this case and discuss the potential of malignant transformation and the usefulness of endoscopic ultrasonography in choledochocele.


Ampulla of vater; Ampullary adenoma; Choledochal cyst; Endoscopic papillectomy; Endosonography; 십이지장 유두부 종양; 십이지장 유두부 선종; 총담관류; 내시경 유두 절제술; 내시경 초음파
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