title: Intraosseous lipoma in the femoral shaft mimicking a bone metastasis on bone scintigraphy.
abstract: Primary intraosseous lipoma is a rare benign neoplasm of mature fat cells arising within the bone marrow, most commonly within the metaphysis of long bones. Involvement of the epiphysis or diaphysis is uncommon. An intraosseous lipoma typically shows no abnormal uptake of a bone-seeking agent. Bone scintigraphy demonstrated a focal area of uptake in the right femoral shaft mimicking a bone metastasis in a 52-year-old man with basal cell carcinoma of the face. Plain radiography showed a well-defined radiolucent lesion with endosteal erosion in the intramedullary portion. MRI showed no fat tissue in the lesion. Histology confirmed intraosseous lipoma with dystrophic calcification and myxomatous degeneration.
authors.affiliation: Department of Nuclear Medicine, Chonbuk National University Medical School, Jeonju, Jeonbuk, Korea. mhsohn@chonbuk.ac.kr
authors.forename: Myung-Hee
authors.initials: MH
authors.lastname: Sohn
authors.forename: Seok Tae
authors.initials: ST
authors.lastname: Lim
authors.forename: Hwan-Jeong
authors.initials: HJ
authors.lastname: Jeong
authors.forename: Dong Wook
authors.initials: DW
authors.lastname: Kim
authors.forename: Kyu Yun
authors.initials: KY
authors.lastname: Jang
authors.forename: Chang-Yeol
authors.initials: CY
authors.lastname: Yim
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary*; D005269:Femur / Q000000981:diagnostic imaging* / Q000473:pathology*; D006801:Humans; D008067:Lipoma / Q000000981:diagnostic imaging* / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging