title: A Mimic of Intra-abdominal Malignancy: Physiological Urinary Excretion of FDG in the Rare Adult Vesicourachal Diverticulum.
abstract: Urachal remnant anomalies are rare, and vesicourachal diverticulum is the most uncommon subtype of these anomalies. We present such a rare case of vesicourachal diverticulum that is incidentally discovered during the staging surveillance of a known esophageal cancer with F-FDG PET/CT. The physiological urinary excretion of radiopharmaceutical in the vesicourachal diverticulum mimics intra-abdominal malignancy, which resolves spontaneously in the follow-up FDG PET/CT.
authors.affiliation: From the *Department of Nuclear Medicine and PET Center, China Medical University Hospital; †Department of Biomedical Imaging and Radiological Science, China Medical University; ‡Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital; §Graduate Institute of Clinical Medical Science, China Medical University, Taichung City; ∥Department of Nuclear Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu City; and ¶School of Medicine, China Medical University, Taichung City, Taiwan.
authors.forename: Te-Chun
authors.initials: TC
authors.lastname: Hsieh
authors.forename: Shung-Shung
authors.initials: SS
authors.lastname: Sun
authors.forename: Chen-Yuan
authors.initials: CY
authors.lastname: Lin
authors.forename: Yu-Chin
authors.initials: YC
authors.lastname: Wu
authors.forename: Chia-Hung
authors.initials: CH
authors.lastname: Kao
mesh_terms: D000008:Abdominal Neoplasms / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004240:Diverticulum / Q000000981:diagnostic imaging*; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging; D019788:Fluorodeoxyglucose F18 / Q000652:urine*; D006801:Humans; D033162:Incidental Findings; D008297:Male; D008875:Middle Aged; D000072078:Positron Emission Tomography Computed Tomography; D019275:Radiopharmaceuticals / Q000652:urine*; D014497:Urachus / Q000002:abnormalities*; D014551:Urinary Tract / Q000002:abnormalities / Q000000981:diagnostic imaging*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18