Challenges for clinicians treating autoimmune pancreatitis: Current perspectives

Figure 2 Computed tomography and magnetic resonance imaging findings of autoimmune pancreatitis. A: Axial computed tomography (CT) image shows “sausage-like appearance” of diffuse enlargement of the pancreas with absence of pancreatic clefts (white arrows); B: Delayed enhancement (open white arrow) with swelling of the pancreatic tail; C: Hypotonic band (white arrow heads), called the “capsule-like rim”, around the pancreas; D: Axial CT image demonstrates a homogenous enhanced mass (black arrow) with proven autoimmune pancreatitis in the pancreas head mimicking pancreatic ductal adenocarcinoma; E: A pancreatic-phase dynamic contrast-enhanced magnetic resonance imaging (MRI) shows a mild arterial enhanced mass-like lesion (black arrow) with a penetrating duct sign (white arrow); F: An MRI cholangiopancreatography image shows irregular narrowing of the main pancreatic duct (white arrows) without upstream dilatation and short segment stricture of the common bile duct (open white arrow).