Carcinoid Tumor of Common Bile Duct (CBD) Misdiagnosed as Cholangiocarcinoma Abstract #369

Introduction: Carcinoid tumors of the bile duct are extremely rare. Unlike cholangiocarcinoma, they grow more slowly and generally occur in younger patients and in females. They have better prognosis and greater disease free survival.
Aim(s): To present a carcinoid tumor of CBD misdiagnosed as cholangiocarcinoma in a 25 y/o male.
Materials and methods: A 25 y/o male presented with abdominal pain and obstructive jaundice. AST, ALT, bilirubin and alkaline phosphatase were high. CA19-9 was 120u/ml (high, Nl<37). MRCP revealed an intraluminal 20×19 mm mass in the distal of common hepatic duct and proximal of common bile duct (CBD) and was suggestive of cholangiocarcinoma of common bile duct. He underwent a laparotomoy, cholecystectomy and choledocojejunostomy. Initially, pathology reported cholangiocarcinoma. Pathology and biopsy samples were sent to an expert pathologist for review. IHC was reported as carcinoid tumor of CBD, and IHC study was strongly positive for chromogranin and NSE.
Conference: 9th Annual ENETS Conference (2012)
Category: Clinical
Presenting Author: Dr Nasim Valizadeh

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