Nonfunctional pancreatic neuroendocrine tumours misdiagnosed as autoimmune pancreatitis: A case report and review of literature

Figure 1 Abdominal magnetic resonance imaging from 2015 to 2017. A: Magnetic resonance imaging (MRI) in 2015. Axial post-contrast T2-weighted fat saturated MRI in pancreatic phase showed enlarged pancreas with diffuse homogenous enhancement (*). The main pancreatic duct (triangle) and common bile duct (arrow) appear slightly dilated; B: MRI in 2016. Axial post-contrast T2-weighted fat saturated MRI in pancreatic phase showed enlarged pancreas with diffuse homogenous enhancement (*). The main pancreatic duct (triangle) appeared irregularly dilated, and the common bile duct showed mild dilatation (arrow); C: MRI in 2017. Axial post-contrast T2-weighted fat saturated MRI in pancreatic phase showed enlarged pancreas with diffuse homogenous enhancement (*). The head of the pancreas showed obvious swelling (*). The main pancreatic duct (triangle) appeared irregularly expanded, and the common bile duct showed compression (arrow).