title: Tl-201 and Tc-99m HMDP scintigraphic findings in extraskeletal osteosarcoma.
abstract: Extraskeletal osteosarcoma is an extremely rare high-grade malignant soft tissue tumor, which accounts for approximately 4% of osteosarcomas and less than 1% of all soft tissue sarcomas. There have been reports describing the scintigraphic findings of this tumor, especially with Tl-201. We report a biopsy-proven case of extraskeletal osteosarcoma in which the bone and thallium scans were found to be useful in monitoring chemotherapy response. The Tc-99m HMDP bone scan revealed increased extraskeletal uptake in the tumor.
authors.affiliation: Department of Radiology, Ehime University School of Medicine, Shigenobu, Ehime, Japan. raccoon@kb3.so-net.ne.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Kajihara
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Sugawara
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Miki
authors.forename: Teruhito
authors.initials: T
authors.lastname: Mochizuki
authors.forename: Teruki
authors.initials: T
authors.lastname: Kidani
authors.forename: Kenshi
authors.initials: K
authors.lastname: Sakayama
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000000981:diagnostic imaging*; D012516:Osteosarcoma / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives*; D013793:Thallium; D013848:Thigh / Q000000981:diagnostic imaging
chemical_list: D019275:Radiopharmaceuticals; C027549:thallium chloride; C024226:technetium Tc 99m hydroxymethylene diphosphonate; D013793:Thallium; D013669:Technetium Tc 99m Medronate