Autoimmune pancreatitis with atypical imaging findings that mimicked an endocrine tumor

Figure 1 Initial multi-detector computed tomography scan imaging. A: CT scan before contrast injection, coronal reconstruction: enlargement of the main pancreatic duct and the biliary ducts, with enlarged gallbladder; B: CT scan after contrast injection, arterial phase, axial slice: lesion of the head of the pancreas, moderately enhanced after contrast injection.