Primary hepatic neuroendocrine tumor with multiple liver metastases: A case report with review of the literature

Figure 3 Microscopic findings of the primary hepatic neuroendocrine tumor in the present case. A: Tumor cells surrounded a glass-like substance exhibiting a cylindrical arrangement of red staining cytoplasm, and the nucleus was darkly stained (high-power field, × 200); B and C: Immunohistochemical synaptophysin and pancreatic and duodenal homeobox 1 staining in positive tumor cells, respectively.