Fig. 3

Microscopic findings of a hepatic hilar lymph node. a A sheet of differentiated small to large neuroendocrine carcinoma cells fills up the lymph node (hematoxylin and eosin (H&E) stain, ×400). The tumor cells in the lymph nodes are positive for b synaptophysin (×400), c chromogranin A (×400), and d CD56 (×400). The component of adenocarcinoma H&E stain e ×40, f ×200