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. 2013 Jan 22;3:2. doi: 10.3389/fonc.2013.00002

Figure 7.

Figure 7

Somatostatin-producing NETs arising from the papilla of Vater. Macroscopic findings show the solid, polypoid mass in the papilla of Vater (A). The tumor is arranged in a trabecular pattern with pseudoglandular structures (H and E stain, B: low power view, C: high power view). Psammoma bodies are present (C). Immunohistochemically, the tumor cells are positive for somatostatin (D).