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

Figure 1 Representative magnetic resonance imaging and computed tomography image on admission. A: Contrast-enhanced magnetic resonance imaging (MRI) axial view showing a well-enhanced tumor in the pancreatic tail; B: Axial view of contrast-enhanced MRI shows an intravascular filling defect (arrows) occupying the entire portal vein lumen; C: Computed tomography portal venography image showing extensive collateral venous circulation due to portal vein occlusion.