title: [Granular cell tumor of the common bile duct. Contribution of endoscopic ultrasonography in 2 cases].
abstract: We report two cases of granular cell tumors involving the common bile duct in patients presenting with obstructive jaundice. Pre-operative endoscopic ultrasonography showed short asymmetric stricture with small well delimited hypoechoic mass in the distal common bile duct wall and proximal dilatation. These tumors were misdiagnosed as a bile duct carcinoma in one case and biliary metastasis of a melanoma in the other. Histological examination of the resected specimen showed granular cell tumors. A review of the previously reported cases shows that preoperative diagnosis is uncommon. It should be considered when endoscopic ultrasonography performed for biliary obstruction in a young woman shows a small and well limited hypoechoic mass.
authors.affiliation: Département d'Endoscopie Digestive, Hôpital Foch, Suresnes.
authors.forename: A
authors.initials: A
authors.lastname: Aubert
authors.forename: L
authors.initials: L
authors.lastname: Palazzo
authors.forename: B
authors.initials: B
authors.lastname: Meduri
authors.forename: P
authors.initials: P
authors.lastname: Lasser
authors.forename: R
authors.initials: R
authors.lastname: Chiche
authors.forename: C
authors.initials: C
authors.lastname: De Baecque
mesh_terms: D000328:Adult; D002758:Cholangiography; D003135:Common Bile Duct / Q000473:pathology; D003138:Common Bile Duct Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D019160:Endosonography; D005260:Female; D016586:Granular Cell Tumor / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006801:Humans
vernacular_title: Tumeurs à cellules granuleuses de la voie biliaire principale. Apport de l'écho-endoscopie dans 2 cas.