title: Abnormal accumulation of [18F]fluorodeoxyglucose in the aortic wall related to inflammatory changes: three case reports.
abstract: We present 3 cases with abnormal accumulation of FDG in the aortic wall. Their clinical manifestations were vague or asymptomatic, and laboratory data were consistent with inflammatory reaction. These 3 patients were diagnosed with Takayasu arteritis, inflammatory aortic aneurysm (IAA), and retroperitoneal fibrosis (RF), respectively. FDG-PET and CT images showed the intense FDG uptake corresponding to the arterial walls and/or the soft tissue density surrounding the artery. It was deduced that FDG was probably taken up by inflammatory cells which infiltrated the arterial walls and/or the soft tissue mass. These cases indicated that FDG-PET is a useful method for localization of inflammatory lesion in patients with unspecific clinical findings and laboratory data.
authors.affiliation: Department of Radiology, The University of Tokyo, Graduate School of Medicine, Japan.
authors.forename: Miwako
authors.initials: M
authors.lastname: Takahashi
authors.forename: Toshimitsu
authors.initials: T
authors.lastname: Momose
authors.forename: Masashi
authors.initials: M
authors.lastname: Kameyama
authors.forename: Kuni
authors.initials: K
authors.lastname: Ohtomo
mesh_terms: D001011:Aorta / Q000000981:diagnostic imaging* / Q000378:metabolism*; D001025:Aortitis / Q000000981:diagnostic imaging* / Q000378:metabolism*; D005260:Female; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18