title: Asymmetric muscle activity on (18)F-FDG PET/CT.
abstract: A 51-year-old man referred to our department to undergo an F-FDG PET/CT to detect primary tumor 7 days after diagnosis of one left brain metastasis on MRI in the aftermath of acute right-sided hemiparesis. F-FDG PET/CT was performed without sufficient fasting period. It showed abnormal uptake in the left apical lung nodule, suspicious for primary tumor. Moreover, F-FDG PET/CT showed extensive skeletal muscle accumulation which was more significant as expected but concerning only the left side of the body. So, acute right-sided hemiparesis was responsible for no muscle uptake, probably explained by denervation and altered muscle energetics.
authors.affiliation: From the *Department of Nuclear Medicine, University Hospital of Brest, Brest; †Department of Nuclear Medicine, Eugène Marquis Comprehensive Cancer Center of Rennes, Rennes; and ‡European University of Brittany, EA3878 GETBO, IFR 148, Brest, France.
authors.forename: Xavier
authors.initials: X
authors.lastname: Palard
authors.forename: Sébastien
authors.initials: S
authors.lastname: Carai
authors.forename: Pierre-Yves
authors.initials: PY
authors.lastname: Le Roux
authors.forename: Pierre-Yves
authors.initials: PY
authors.lastname: Salaün
authors.forename: Ronan
authors.initials: R
authors.lastname: Abgral
mesh_terms: D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging*; D010291:Paresis / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18