Primary hepatic neuroendocrine tumor — 18F-fluorodeoxyglucose positron emission tomography/computed tomography findings: A case report

Figure 1 Contrast-enhanced computed tomography images of the tumor. A: Non-contrast-enhanced computed tomography (CT) images reveal a 40 mm × 37 mm, well-circumscribed, heterogeneous hypoattenuating mass in the right lower lobe of the liver (arrow); B-D: Dynamic CT images demonstrate a rim-like enhancement of the tumor in the arterial phase (B); portal venous phase (C); and equilibrium phase (D). The tumor is less enhanced than the adjacent liver.