Rare and lacking typical clinical symptoms of liver tumors: Four case reports

Figure 2 Magnetic resonance imaging, pathological examination, and immunohistochemical results of primary hepatic neuroendocrine tumors. A: The margins of the lesion showed enhancement during the arterial phase of magnetic resonance imaging, with the middle lobe exhibiting a mild septal-like enhancement pattern (arrow); B: The lesion in the hepatobiliary phase exhibited a low and slightly low signal (arrow); C: Diffusion weighted imaging revealed a high signal shadow of the lesion (arrow); D: Tumor pathology specimen; E: Hematoxylin and eosin staining 100 ×; F: Ki-67 positivity rate of approximately 30%, immunohistochemical staining 400 ×; G: synaptophysin cell positivity, immunohistochemical staining 400 ×; H: Cytokeratin wide cell positive, immunohistochemical staining 400 ×; I: CD56 partially cell positive, immunohistochemical staining 400 ×.