Obstructive jaundice due to a rare periampullary tumor

Figure 2 Histologic characteristics of the gangliocytic paragangliomas. A: Submucosal location of the peri-ampullary tumor (H and E, original magnification × 2); Epitheliod cells (black arrow) with surrounding spindle cells (white arrow). Ganglion-like cells present (arrow heads) (H and E, original magnification × 20); B: Immunohistochemistry of tumor showing positivity for cytokeratin in the epitheliod cells (original magnification × 4); C: Immunohistochemistry of tumor showing S-100 positivity of the spindle cell component (original magnification × 10).