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CT of unusual renal masses invading the pelvicaliceal system: potential mimics of upper tract transitional cell carcinoma

  • Mary T. Kitazono
    Affiliations
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA
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  • Fergus V. Coakley
    Correspondence
    Corresponding author. Department of Radiology, University of California, San Francisco, Box 0628, M-372, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA. Tel.: +1 415 353 1786; fax: +1 415 476 0616.
    Affiliations
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA
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  • David M. Naeger
    Affiliations
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA
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  • Benjamin M. Yeh
    Affiliations
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA
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  • Bonnie N. Joe
    Affiliations
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA
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  • Aliya Qayyum
    Affiliations
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143-0628, USA
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      Abstract

      Two patients with renal cell carcinoma and one patient with metastasis to the kidney from colorectal cancer are reported because all three cases manifested at computed tomography (CT) as a renal mass invading the pelvicaliceal system and radiologically simulating transitional cell carcinoma. Recognition that the CT finding of a renal mass with invasion of the pelvicaliceal system is not always indicative of a transitional cell carcinoma broadens the differential diagnosis in this setting and might potentially alter the diagnostic and therapeutic approach.

      Keywords

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