Computed tomography and magnetic resonance imaging features of lipid-rich neuroendocrine tumors of the pancreas

Figure 2 Lipid-rich pancreatic neuroendocrine tumors in a 49-year-old woman with von-Hippel-Lindau disease. A: Axial early phase enhanced computed tomography shows a 30 mm tumor with homogenous enhancement (arrow) and a 24 mm tumor with marked peripheral enhancement (arrow head) in the head of the pancreas; B and C: In-phase (134/2.4, 60°) (B) and out-of-phase (134/1.2, 60°) images with 2D technique (C) show a substantial drop in tumor signal intensity from the in-phase [813.0 (arrow) and 819.5 (arrow head)] to the out-of-phase [783.2 (arrow) and 775.3 (arrow head)] image, resulting in signal intensity indexes of 3.7% (arrow) and 5.4% (arrow head), respectively; D: The subtraction image shows apparent high signal intensity (arrow and arrow head).