naa a22 4500 510813569 CHVBK 20180411083454.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s12328-012-0357-7 doi (NATIONALLICENCE)springer-10.1007/s12328-012-0357-7 Reactive fibroinflammatory pseudotumor of the pancreas: report of three cases [Elektronische Daten] [Keiko Hirata, Daisuke Hashimoto, Masahiko Hirota, Kazuya Sakata, Hideyuki Kuroki, Takaaki Ito, Shinji Ishikawa, Tetsumasa Arita, Yasushi Yagi] Reactive fibroinflammatory pseudotumor located in the pancreas is a rare condition. However, we experienced three cases of reactive fibroinflammatory pseudotumor of the pancreas over the previous 2years. Immunohistochemical staining of immunoglobulin G4 (IgG4) confirmed that Cases 1 and 3 involved IgG4-related disease and that Case 2 did not. In Cases 1 and 3, the masses were formed through autoimmune reaction and were diagnosed as autoimmune pancreatitis (AIP). In Case 2, because only a few IgG4-positive cells were found, it was difficult to diagnose AIP or IgG4-related disease. Reactive fibroinflammatory pseudotumors can develop without the involvement of any autoimmune mechanisms. There seems to be partial overlap between reactive fibroinflammatory pseudotumors and AIP. Springer Japan, 2013 Reactive fibroinflammatory pseudotumor nationallicence IgG4-related disease nationallicence Autoimmune pancreatitis nationallicence Pancreatic tumor nationallicence Pancreatic cyst nationallicence Hirata Keiko Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Hashimoto Daisuke Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Hirota Masahiko Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Sakata Kazuya Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Kuroki Hideyuki Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Ito Takaaki Departments of Pathology and Experimental Medicine, Kumamoto University Graduate School of Medical Sciences, 1-1-1 Honjo, 860-8556, Kumamoto, Japan aut Ishikawa Shinji Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Arita Tetsumasa Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Yagi Yasushi Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut Clinical Journal of Gastroenterology Springer Japan 6/1(2013-02-01), 84-88 1865-7257 6:1<84 2013 6 12328 https://doi.org/10.1007/s12328-012-0357-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12328-012-0357-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hirata Keiko Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Hashimoto Daisuke Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Hirota Masahiko Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Sakata Kazuya Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Kuroki Hideyuki Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Ito Takaaki Departments of Pathology and Experimental Medicine, Kumamoto University Graduate School of Medical Sciences, 1-1-1 Honjo, 860-8556, Kumamoto, Japan aut NATIONALLICENCE 700 1- Ishikawa Shinji Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Arita Tetsumasa Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 700 1- Yagi Yasushi Department of Surgery, Kumamoto Regional Medical Center, 5-16-10 Honjo, 860-0811, Kumamoto, Japan aut NATIONALLICENCE 773 0- Clinical Journal of Gastroenterology Springer Japan 6/1(2013-02-01), 84-88 1865-7257 6:1<84 2013 6 12328 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer