title: Utility of 24 hour bone scan in evaluation of bone involvement by soft tissue sarcoma.
abstract: Accumulation of Tc-99m MDP in soft tissue malignancies occurs frequently. When tumor overlaps adjacent bone structures, the bone margins can be indiscernible on a regular bone scan. Additional views should be taken to differentiate bone from tumor, however, separation is sometimes difficult and not always successful. This report presents a patient in whom accumulation of Tc-99m MDP in a liposarcoma of the thigh disappeared on a 24 hour scan and bone margins were seen clearly. A possible mechanism for this phenomenon and its utility are discussed.
authors.affiliation: Department of Nuclear Medicine, Sheba Medical Center, Tel Hashomer, Israel.
authors.forename: S
authors.initials: S
authors.lastname: Mekhmandarov
authors.forename: M
authors.initials: M
authors.lastname: Azaria
authors.forename: S
authors.initials: S
authors.lastname: Engelberg
authors.forename: L M
authors.initials: LM
authors.lastname: Lieberman
mesh_terms: D000328:Adult; D005260:Female; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D008080:Liposarcoma / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*; D013669:Technetium Tc 99m Medronate; D013848:Thigh; D013997:Time Factors
chemical_list: D013669:Technetium Tc 99m Medronate