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Coexisting Sources of False-Positive Reflux on a Direct Radionuclide Cystography Scan

Mohsen Qutbi, Ali Asadi and Isa Neshandar Asli
Journal of Nuclear Medicine Technology June 2019, 47 (2) 177-178; DOI: https://doi.org/10.2967/jnmt.118.222075

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Figures

  • FIGURE 1.
    FIGURE 1.

    (A) Filling and voiding phases of direct radionuclide cystography scan from posterior view. Spot (arrow) appeared from beginning to end of study. On left side, activity is seen in renal pelvis (large arrowhead) and ureter (small arrowhead). (B) Filling and voiding phases of repeat direct radionuclide cystography scan showed no activity in left renal pelvis but persistent focal activity in pelvis above bladder. (C) Dynamic posterior 99mTc-diethylenetriaminepentaacetic renal scan with standard protocol did not show any corresponding abnormality in pelvis.

  • FIGURE 2.
    FIGURE 2.

    (A) Anterior view of head and neck. Uptake in salivary glands and thyroid implies presence of pertechnetate in circulation after absorption through inflamed bladder mucosa. (B and C) Spot view of point source without (B) and with (C) brightness enhancement. With increase in brightness, another smaller spot became visible above and to right of point source, in location similar to that on patient scan.

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