Focal autoimmune pancreatitis and chronic sclerosing sialadenitis mimicking pancreatic cancer and neck metastasis

Figure 1 Rare computed tomography images of type I autoimmune pancreatitis. A same image with pancreatic cancer (PC) in the body of the pancreas (white arrow) one year ago prior to admission (A), a similar image of pancreatic head carcinoma (white arrow) accompanied by common bile duct dilation (black arrow) at admission (B), and slightly reduced in the pancreatic head volume (white arrow) with a normal common bile duct (black arrow) after steroid therapy (C).