title: Immunoglobulin G4-related disease: autoimmune pancreatitis and extrapancreatic manifestations.
abstract: We present a case of immunoglobulin G4 (IgG4)-related disease with pancreatic and extrapancreatic involvement, including the biliary and renal systems. Given the importance of imaging methods for the diagnosis of IgG4-related disease and its differentiation from pancreatic adenocarcinoma, we emphasize important abdominal computed tomography and magnetic resonance imaging findings related to this recently recognized systemic autoimmune disease.
authors.affiliation: MD, Attending Radiologist in the Radiology Department of the Faculdade de Ciências Médicas da Universidade Estadual de Campinas (FCM-Unicamp), Campinas, SP, Brazil.
authors.forename: Daniel Alvarenga
authors.initials: DA
authors.lastname: Fernandes
authors.affiliation: MD, Resident in Radiology and Diagnostic Imaging at the Faculdade de Ciências Médicas da Universidade Estadual de Campinas (FCM-Unicamp), Campinas, SP, Brazil.
authors.forename: Ricardo Yoshio Zanetti
authors.initials: RY
authors.lastname: Kido
authors.affiliation: MD, MSc, Attending Radiologist in the Radiology Department of the Faculdade de Ciências Médicas da Universidade Estadual de Campinas (FCM-Unicamp), Campinas, SP, Brazil.
authors.forename: Ricardo Hoelz de Oliveira
authors.initials: RH
authors.lastname: Barros
authors.affiliation: MD, Attending Radiologist in the Radiology Department of the Faculdade de Ciências Médicas da Universidade Estadual de Campinas (FCM-Unicamp), at the Pontifícia Universidade Católica de Campinas (PUC-Campinas), and at the Centro Radiológico Campinas - Hospital Vera Cruz, Campinas, SP, Brazil.
authors.forename: Daniel Lahan
authors.initials: DL
authors.lastname: Martins
authors.affiliation: MD, Attending Radiologist in the Radiology Department of the Faculdade de Ciências Médicas da Universidade Estadual de Campinas (FCM-Unicamp), at the Pontifícia Universidade Católica de Campinas (PUC-Campinas), and at the Centro Radiológico Campinas - Hospital Vera Cruz, Campinas, SP, Brazil.
authors.forename: Thiago José
authors.initials: TJ
authors.lastname: Penachim
authors.affiliation: PhD, Tenured Professor in the Radiology Department of the Faculdade de Ciências Médicas da Universidade Estadual de Campinas (FCM-Unicamp), Campinas, SP, Brazil.
authors.forename: Nelson Marcio Gomes
authors.initials: NM
authors.lastname: Caserta
keywords: Autoimmune diseases; Computed tomography; Magnetic resonance imaging; Pancreas; Pancreatitis