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Sacral insufficiency fracture detected by FDG-PET/CT: Report of 2 cases

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Abstract

We report 2 cases of sacral insufficient fracture detected by FDG-PET/CT. In case 1, a 79-year-old female patient with malignant lymphoma, who had recent lumbago, received FDG-PET/CT examination. Vertical linear FDG uptake medial to bilateral sacro-iliac joint was observed on FDG-PET and a fracture line corresponding to FDG uptake was observed in bone window of CT images. In case 2, an 81-year-old male patient with colon cancer, who also complained of lumbago, received FDG-PET/CT examination. Vertical linear FDG uptake medial to bilateral sacro-iliac joint and horizontal uptake which connects vertical line (H-shaped) was demonstrated and CT also demonstrated a fracture line corresponding to FDG uptake. H-shaped high intensity area corresponding to FDG uptake was observed on T2-weighted image of MRI. On bone scintigraphy, H-shaped uptake was also observed. Like bone scintigraphy, typical H-shaped FDG uptake may be diagnostic in sacral insufficiency fracture. Adding CT information to FDG-PET, that is, assessing SIF with FDG-PET/CT may be useful when atypical findings are observed.

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Authors and Affiliations

  1. Department of Radiology, Faculty of Medicine, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, 910-1193, Fukui, Japan

    Tatsuro Tsuchida, Nobuyuki Kosaka, Katsuya Sugimoto & Harumi Itoh

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  1. Tatsuro Tsuchida
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  2. Nobuyuki Kosaka
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  3. Katsuya Sugimoto
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  4. Harumi Itoh
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Correspondence to Tatsuro Tsuchida.

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Tsuchida, T., Kosaka, N., Sugimoto, K. et al. Sacral insufficiency fracture detected by FDG-PET/CT: Report of 2 cases. Ann Nucl Med 20, 445–448 (2006). https://doi.org/10.1007/BF03027382

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  • DOI: https://doi.org/10.1007/BF03027382

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