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Prostate Cancer Presenting as a Solitary Sacral Osteolytic Metastasis Mimicking Chordoma on 18F-FDG PET/CT

  • Dong Huang
    Affiliations
    Departments of Nuclear Medicine, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Sichuan, China
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  • Xing Yang
    Affiliations
    Departments of Nuclear Medicine, Sichuan Science City Hospital, Mianyang, Sichuan, PR China
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  • Ya Liu
    Affiliations
    Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, PR China

    Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
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  • Zhanwen Huang
    Correspondence
    Address correspondence to: Zhanwen Huang, MD, Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, No 15 TaiPing St, Jiangyang District, Luzhou, Sichuan, PR China. 646000.
    Affiliations
    Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, PR China

    Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
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Published:September 14, 2022DOI:https://doi.org/10.1016/j.urology.2022.09.003
      A 62-year-old-man presented with 6 month history of sacrococcygeal pain and difficulty urinating. Digital rectal examination revealed unsymmetrical enlargement of the prostate, which felt nodular on the anterior rectal wall. Pelvic MRI showed a well-defined heterogeneous mass extending from the sacrum and accompanied by bone destruction (Fig. 1A, B). The lesions were predominantly isointense on T1-weighted images (A, arrowhead) and a mixed high signal on T2-weighted images and DWI (B, C, arrowhead). Additionally, a mass with a low signal on T2-weighted images (B, arrow) and a high signal on DWI (C, arrow) was seen in the peri-prostatic zone.
      Figure 1
      Figure 1MRI images. (A-C) Sagittal T1/T2-weighted images and DWI, showing a heterogeneous mass with bone destruction. (B and C) Sagittal T2-weighted images and DWI showing an irregular mass in the left posterior part of the prostate.
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