[Granular cell tumor of the common bile duct. Contribution of endoscopic ultrasonography in 2 cases].
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.
Aubert
A
A
Département d'Endoscopie Digestive, Hôpital Foch, Suresnes.
Palazzo
L
L
Meduri
B
B
Lasser
P
P
Chiche
R
R
De Baecque
C
C
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
Tumeurs à cellules granuleuses de la voie biliaire principale. Apport de l'écho-endoscopie dans 2 cas.