Percutaneous transhepatic intraportal biopsy using gastroscope biopsy forceps for diagnosis of a pancreatic neuroendocrine neoplasm: A case report

Figure 2 Morphology and immunohistochemistry image of the tumor and radiograph from portography. A: Hematoxylin and eosin stained section of the tumor; B: Immunohistochemistry staining for Ki-67 showed Ki-67 index of 5%-8%; C and D: Immunohistochemistry staining for synaptophysin (C) and somatostatin receptors 2 (D) were positive (magnification × 400); E: Portography showing a filling defect within the intravascular space (arrows) in the main portal vein; F: Intravascular biopsy using gastroscope biopsy forceps assisted by a 7-F guide catheter located in the right portal vein (arrow).