title: Extraosseous uptake of 99mtechnetium methylene diphosphonate: neuroblastoma or radiation therapy.
abstract: A child with a ganglioneuroblastoma and tumor uptake of 99mtechnetium methylene diphosphonate (99mTc-MDP) is presented. After surgical removal of an encapsulated tumor and radiation therapy, an interval bone scan demonstrated the same presurgical abnormality. Awareness of abnormal uptake of 99mTc-MDP in irradiated renal tissue prevents interpreting radiation nephritis as recurrent tumor.
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D009364:Neoplasm Recurrence, Local; D009393:Nephritis / Q000000981:diagnostic imaging*; D009447:Neuroblastoma / Q000000981:diagnostic imaging* / Q000532:radiotherapy; D011832:Radiation Injuries / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium