title: ¹⁸F-FDG PET-CT usefulness in extra-pancreatic involvement in IgG4 related diseases.
abstract: IgG4-related diseases are a group of recently identified entities that include disorders that were previously known by other names, such as Mikulicz disease, Küttner's tumor, Riedel thyroiditis, among others, as well as some new ones described in the last years. These pathologies are a challenge for the medical community in terms of diagnosis and characterization due to their wide spectrum of clinical presentation. Functional imaging can provide a new approach to the comprehension of physiopathology, staging and targeting site of biopsy of IgG4-related diseases. In this clinical note, we describe five patients who underwent ¹⁸F-FDG PET-CT and correlate their findings with previous reports.
authors.affiliation: Servicio Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, Spain. Electronic address: racarden@vhebron.net.
authors.forename: R
authors.initials: R
authors.lastname: Cárdenas-Perilla
authors.affiliation: Servicio Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Monturiol-Duran
authors.affiliation: Servicio Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Simó-Perdigó
authors.affiliation: Servicio Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Barios-Profitós
authors.affiliation: Servicio Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Castell-Conesa
mesh_terms: D000368:Aged; D001025:Aortitis / Q000000981:diagnostic imaging*; D001327:Autoimmune Diseases / Q000097:blood / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005462:Fluorine Radioisotopes / Q000032:analysis*; D019788:Fluorodeoxyglucose F18 / Q000032:analysis*; D006801:Humans; D006942:Hypergammaglobulinemia / Q000097:blood*; D007074:Immunoglobulin G / Q000097:blood*; D008199:Lymphadenitis / Q000000981:diagnostic imaging*; D008232:Lymphoproliferative Disorders / Q000175:diagnosis; D008297:Male; D008643:Mesentery / Q000000981:diagnostic imaging*; D008875:Middle Aged; D018358:Neuroendocrine Tumors / Q000175:diagnosis; D009928:Organ Specificity; D010950:Plasma Cells / Q000276:immunology / Q000473:pathology; D000072078:Positron Emission Tomography Computed Tomography / Q000379:methods*; D019275:Radiopharmaceuticals / Q000032:analysis*
chemical_list: D005462:Fluorine Radioisotopes; D007074:Immunoglobulin G; D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18
keywords: (18)F-FDG PET-CT; 18F-FDG PET-TC; Enfermedades Enfermedades relacionadas con IgG4 extra-pancreática; Enfermedades relacionadas con IgG4; Extrapancreatic IgG4 related diseases; Fibrosis retroperitoneal; IgG4 related diseases; Retroperitoneal fibrosis