A Case of Mucin-Producing Cholangiocarcinoma Diagnosed by Intraductal Ultrasonography and Peroral Cholangioscopy
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We report a case of mucin-producing cholangiocarcinoma in which POCS and IDUS were useful in preopera- tive diagnosis and treatment selection. A 75-year-old woman with abdominal pain was admitted with a diagno- sis of obstructive jaundice. ERCP showed a widely open ampulla of Vater with an extrusion of mucin and mu- cinous filling defects in a dilated common bile duct. IDUS showed an asymmetrical hyperechoic layer in the bi- furcation of the right anterior segmental bile duct, which we believed to be limited to the mucosal layer. We confirmed its location and assessed the longitudinal tumor spread by POCS, diagnosed as adenocarcinoma by brush biopsy. We diagnosed the tumor as mucin-producing cholangiocarcinoma localized to the bifurcation of the right anterior segmental bile duct and the mucosal layer. Histologically, the 15×10 mm tumor remained localized in the mucosal layer. Curative surgery was successful. The patient remains asymptomatic andtumor-free a year and 2 months after surgery.
- 一般社団法人 日本消化器外科学会の論文
一般社団法人 日本消化器外科学会 | 論文
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