Fig. 3.
a PanNET: pancreatic neuroendocrine cells with salt-pepper chromatin pattern, forming rosette-like structures (PAP ×200). Neuroendocrine tumors have potential to metastasize, even if they are low grade. b PanNET: pancreatic neuroendocrine cells forming rosette-like structures (Diff Quick ×400) and positive for chromogranin in cell block (inset: Chromogranin ×400).