title: Sign of the school knapsack: myositis of the trapezius muscles caused by overload.
authors.affiliation: Nuclear Medicine Service, Hospital Universitario 12 de Octubre, Madrid, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Guerrero
authors.forename: A
authors.initials: A
authors.lastname: Manrique
authors.forename: S
authors.initials: S
authors.lastname: Del Rio
authors.forename: S
authors.initials: S
authors.lastname: Ruiz
authors.forename: E
authors.initials: E
authors.lastname: Haro
authors.forename: L
authors.initials: L
authors.lastname: Díaz
authors.forename: F
authors.initials: F
authors.lastname: Arnaiz
mesh_terms: D002648:Child; D019343:Citric Acid; D005710:Gallium Radioisotopes; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging*; D009220:Myositis / Q000000981:diagnostic imaging* / Q000209:etiology; D011877:Radionuclide Imaging
chemical_list: D005710:Gallium Radioisotopes; D019343:Citric Acid