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Detection of lymph nodes in pelvic malignancies with computed tomography and magnetic resonance imaging

  • Anuradha Saokar
    Affiliations
    Center for Molecular Imaging Research, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA

    Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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  • Tina Islam
    Correspondence
    Corresponding author. Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA. Tel.: +1 617 724 4266; fax: +1 617 726 4891.
    Affiliations
    Center for Molecular Imaging Research, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA

    Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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  • Marion Jantsch
    Affiliations
    Center for Molecular Imaging Research, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA

    Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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  • Mansi A. Saksena
    Affiliations
    Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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  • Peter F. Hahn
    Affiliations
    Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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  • Mukesh G. Harisinghani
    Affiliations
    Center for Molecular Imaging Research, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA

    Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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      Abstract

      Thirty patients with prostate or bladder cancer underwent CT and MRI for nodal staging. CT detected 189 nodes, and MRI detected 271 nodes. This difference was statistically significant in the external iliac (CT/MRI=73/87 nodes), obturator (CT/MRI=48/75 nodes), and internal iliac (CT/MRI=24/46 nodes) nodal chains. Based on size, the number of nodes detected by CT and MRI were as follows: 1–5 mm, CT/MRI=91/166; 6–10 mm, CT/MRI=91/98; >10 mm, CT/MRI=7/7 nodes. MRI detected significantly more lymph nodes in the size range of 1–5 mm.

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