title: Ureteral Hernia Mimicking Retrocrural Lymphadenopathy in 18F-FDG PET/CT.
abstract: An 82-year-old woman was submitted to (18)F-FDG PET/CT to evaluate an indeterminate solitary lung nodule identified on chest CT. At the examination, there was a hypermetabolic area at the topography of the right retrocrural region, mimicking a lymphadenopathy on axial images. After careful analysis of multiplanar CT images, it was better characterized as a loop of the ureter insinuating itself by a small diaphragmatic hernia. Ureteral hernia is a rare entity with few cases reported in the literature. This case demonstrates the importance of conducting careful evaluation of multiplanar CT images to avoid false-positive results on PET/CT.
authors.affiliation: From the Diagnostic Unit, Hospital Paulistano, São Paulo, Brazil.
authors.forename: Lanamar
authors.initials: L
authors.lastname: Almeida
authors.forename: Felipe
authors.initials: F
authors.lastname: Carvalhaes
authors.forename: Almir
authors.initials: A
authors.lastname: Bitencourt
authors.forename: Fernando
authors.initials: F
authors.lastname: Moreira
mesh_terms: D000369:Aged, 80 and over; D003951:Diagnostic Errors; D005260:Female; D019788:Fluorodeoxyglucose F18; D006548:Hernia, Diaphragmatic / Q000000981:diagnostic imaging*; D006801:Humans; D008206:Lymphatic Diseases / Q000000981:diagnostic imaging*; D064847:Multimodal Imaging; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D014057:Tomography, X-Ray Computed; D014513:Ureter / Q000000981:diagnostic imaging*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18