title: Appendiceal Immunoglobulin G4-Related Disease Mimicking Appendiceal Tumor or Appendicitis: A Case Report.
abstract: Immunoglobulin G4 (IgG4)-related disease is an autoimmune disease that forms tumorous lesions. Several cases involving various organs are reported, however, IgG4-related disease involving appendix has not been reported yet. In this report, we presented a case of IgG4-related disease of appendix, which raised a suspicion of appendiceal tumor or usual appendicitis and, therefore, led to unnecessary surgical resection. IgG4-related disease should be considered in the differential diagnosis for a mass-like swelling of the appendix, in order to avoid unnecessary surgery.
authors.affiliation: Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul 07345, Korea.
authors.forename: Hyun Soo
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Surgery, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul 07345, Korea.
authors.forename: Won Kyung
authors.initials: WK
authors.lastname: Kang
authors.affiliation: Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul 07345, Korea.
authors.forename: Dong Jin
authors.initials: DJ
authors.lastname: Chung
mesh_terms: D001063:Appendiceal Neoplasms / Q000175:diagnosis*; D001064:Appendicitis / Q000175:diagnosis*; D001065:Appendix / Q000276:immunology / Q000473:pathology*; D001327:Autoimmune Diseases / Q000175:diagnosis* / Q000276:immunology; D003937:Diagnosis, Differential; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D009369:Neoplasms
chemical_list: D007074:Immunoglobulin G
keywords: Appendix; CT; IgG4-related disease