title: Granular cell tumor of the intrapancreatic common bile duct.
abstract: A case of granular cell tumor involving the intrapancreatic portion of the common bile duct is reported. The tumor was misdiagnosed as a bile duct carcinoma clinically and at surgery. Intraoperative needle biopsy failed to provide a specific diagnosis and led to a pancreatico-duodenectomy. The importance of making a specific frozen section diagnosis and the difficulties associated with this in this setting are presented.
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D003138:Common Bile Duct Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D003937:Diagnosis, Differential; D005260:Female; D005629:Frozen Sections; D006801:Humans; D010183:Pancreatic Ducts