title: Collar Osteophytes Mimicking Osteonecrosis in Planar Bone Scintigraphy and Usefulness of SPECT/CT Images.
abstract: The use of prednisolone is one major risk factor for osteonecrosis in patients with systemic lupus erythematosus. Bone scintigraphy can be a diagnostic tool for early diagnosis. We present a case who had collar osteophytes at the bilateral femoral heads, which mimicked osteonecrosis in the planar bone scintigram. An SPECT/CT scan avoided this pitfall and increased the diagnostic accuracy for osteonecrosis.
authors.affiliation: From the *Department of Nuclear Medicine, Taichung Veterans General Hospital, Taichung; and †Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.
authors.forename: Jr-Jian
authors.initials: JJ
authors.lastname: Juang
authors.forename: Yi-Hsing
authors.initials: YH
authors.lastname: Chen
authors.forename: Shih-Chuan
authors.initials: SC
authors.lastname: Tsai
authors.forename: Wan-Yu
authors.initials: WY
authors.lastname: Lin
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010020:Osteonecrosis / Q000000981:diagnostic imaging* / Q000473:pathology; D054850:Osteophyte / Q000000981:diagnostic imaging* / Q000473:pathology; D000072098:Single Photon Emission Computed Tomography Computed Tomography