Simultaneous occurrence of autoimmune pancreatitis and pancreatic cancer in patients resected for focal pancreatic mass

Figure 1 Histological findings in resected pancreatic tissue in a patient with synchronous presence of type 1 autoimmune pancreatitis and pancreatic cancer. A: Autoimmune pancreatitis (AIP), hematoxylin-eosin (HE) staining, original magnification × 40; B: AIP showing storiform fibrosis, HE staining, original magnification × 40; C: AIP with immunohistochemical staining of plasma cells for IgG4; D: Pancreatic cancer, HE staining, original magnification × 40.

Figure 2 Imaging findings in a patient with autoimmune pancreatitis. A: Hypodense lesion in the pancreatic head on computed tomography; B: Hypoechoic lesion of the pancreatic head on endoscopic ultrasonography.

Figure 3 Imaging findings in a patient with autoimmune pancreatitis + pancreatic cancer. A: Hypodense lesion in the pancreatic head with a common bile duct (CBD) stent on computed tomography; B: Distal CBD stricture on endoscopic retrograde cholangio-pancreatography.