title: Osteosarcoma pulmonary metastasis mimicking abnormal skeletal uptake in bone scan: utility of SPECT/CT.
abstract: We present a case of a 15-year-old boy with osteoblastic osteosarcoma of the left distal femur. The patient was referred to bone scan for initial staging. On planar bone scan, there is increased uptake of 99mTc-MDP (99mTc-methylene diphosphonate) in the left distal femur. There are also multiple sites of abnormal tracer uptake projecting to the thoracic cage, initially assumed to be localized in the ribs. SPECT/CT correctly identified them as pulmonary metastases. This case illustrates the potential advantages and utility of SPECT/CT imaging of skeletal bone scan in order to decide on the optimal treatment.
authors.affiliation: From the Faculty of Medicine, Department of Nuclear Medicine, University Hospital of Tlemcen, Tlemcen, Algeria.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Mebarki
authors.forename: Abdelkader
authors.initials: A
authors.lastname: Medjahedi
authors.forename: Abdelghani
authors.initials: A
authors.lastname: Menemani
authors.forename: Siham
authors.initials: S
authors.lastname: Betterki
authors.forename: Sabah
authors.initials: S
authors.lastname: Terki
authors.forename: Necib
authors.initials: N
authors.lastname: Berber
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005269:Femur / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary*; D008297:Male; D012516:Osteosarcoma / Q000000981:diagnostic imaging / Q000473:pathology*; D013669:Technetium Tc 99m Medronate; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed; D051598:Whole Body Imaging
chemical_list: D013669:Technetium Tc 99m Medronate