Journal of Medical Cases, ISSN 1923-4155 print, 1923-4163 online, Open Access
Article copyright, the authors; Journal compilation copyright, J Med Cases and Elmer Press Inc
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Case Report

Volume 8, Number 4, April 2017, pages 132-136

Granular Cell Tumor of the Common Bile Duct: A Case Report of a Rare Anatomical Entity and Brief Review of the Literature

Figures

Figure 1.
Figure 1. (a) Axial CT and (b) coronal reconstruction images show that there is no any visible mass.
Figure 2.
Figure 2. MRI coronal T2-weighted image (a) and axial post-contrast vibe image (b) show dilatation of the common bile duct and normal appearance of pancreatic head.
Figure 3.
Figure 3. On MRCP, 2D (a) and 3D (b) dilatation of the intrahepatic bile ducts as well as dilatation of the common bile duct with ill-defined intraluminal filling defect is depicted. The distal common bile duct is normal.
Figure 4.
Figure 4. Histological examination shows infiltration around epithelial elements of ampulla of Vater by large polygonal cells with eosinophilic granular cytoplasm and small round regular usually eccentric nucleus (H&E, × 100) (a). The same image in higher magnification (H&E, × 200) (b)
Figure 5.
Figure 5. Immunohistochemical examination shows that tumor cells are positive for S-100 protein (immunostain, × 200) (a), CD68 (immunostain, × 200) (b), and NSE (immunostain, × 200) (c).