Fig. 2

Abdominal computed tomography showing the pancreas in patients with autoimmune pancreatitis. The post-treatment pancreatic volume was 30.3 cm³, and the percent reduction in the pancreatic volume was 68.2 % in a patient who showed a favorable response without relapse before steroid therapy (a) and 2 weeks after starting steroid therapy (b). The pancreatic volume was not reduced in a patient who showed an unfavorable response with relapse. The post-treatment pancreatic volume was 51.6 cm³, and the percent reduction in the pancreatic volume was 42.3 % before steroid therapy (c) and after 2 months starting steroid therapy (d); at 47 months during relapse, dilatation of the biliary tree (e) was observed