An Incidentally Detected Remnant Cystic Duct Carcinoma during the Evaluation of a Duodenal Submucosal Tumor (SMT) Lesion

Carcinoma of the cystic duct remnant is a rare disease. We report a case of a remnant cystic duct carcinoma in a male patient who had undergone cholecystectomy for cholecystolithiasis 20 years previously. A 53-yr-old man visited our hospital for the evaluation of a submucosal tumor on the duodenum. During the evaluation, we detected a mass in the cystic duct remnant by the use of endoscopic ultrasonography. Based on the pathology, the mass was confirmed as a carcinoma of the cystic duct remnant by intraductal ultrasonography and an intraductal biopsy. (Korean J Gastrointest Endosc 2008;36:401-405)