title: Localized IgG4-related Cholecystitis Mimicking Gallbladder Cancer.
abstract: We encountered a case of localized IgG4-cholecystitis mimicking gallbladder cancer with focal/segmental type1 autoimmune pancreatitis (AIP). In this case, we were unable to exclude a diagnosis of gallbladder cancer and thus performed radical cholecystectomy. Type1 AIP is often associated with gallbladder lesions, accompanied by generally diffuse, circumferential thickening of the gallbladder wall. Although localized IgG4-related cholecystitis is extremely rare, differentiating this condition from gallbladder cancer is often very difficult.
authors.affiliation: Department of Gastroenterology, Gifu Prefectural Tajimi Hospital, Japan.
authors.forename: Tadahisa
authors.initials: T
authors.lastname: Inoue
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Okumura
authors.forename: Takashi
authors.initials: T
authors.lastname: Mizushima
authors.forename: Hirotada
authors.initials: H
authors.lastname: Nishie
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Iwasaki
authors.forename: Kaiki
authors.initials: K
authors.lastname: Anbe
authors.forename: Takanori
authors.initials: T
authors.lastname: Ozeki
authors.forename: Kenta
authors.initials: K
authors.lastname: Kachi
authors.forename: Shigeki
authors.initials: S
authors.lastname: Fukusada
authors.forename: Yuta
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Kazuko
authors.initials: K
authors.lastname: Watanabe
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Sano
mesh_terms: D000893:Anti-Inflammatory Agents / Q000627:therapeutic use*; D015415:Biomarkers / Q000378:metabolism; D002763:Cholecystectomy / Q000379:methods*; D002764:Cholecystitis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology / Q000378:metabolism*; D008875:Middle Aged; D011239:Prednisolone / Q000627:therapeutic use*; D016896:Treatment Outcome
chemical_list: D000893:Anti-Inflammatory Agents; D015415:Biomarkers; D007074:Immunoglobulin G; D011239:Prednisolone