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Scintigraphic detection of 'yo-yo' phenomenon in incomplete ureteric duplication

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Abstract.

'Yo-yo' reflux in an incompletely duplicated renal system was demonstrated on 99mTc-mercaptoacetyltriglycine (MAG3) renal scintigraphy in a 7-year-old girl presenting with low-grade fever and pyelonephritis. Incomplete duplication and a bifid renal pelvis, which may be seen in up to 4% of the North American population, occasionally causes symptoms because of recurrent urinary tract infection or loin pain. 99mTc-MAG3 renal scintigraphy can demonstrate 'yo-yo' reflux in patients with incomplete renal duplication and should be considered in cases with unexplained loin pain, even if 99mTc-dimercaptosuccinic acid (DMSA) renal scintigraphy is normal.

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Authors and Affiliations

  1. Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China, , , , ,

    Winnie C. Chu, Kam-wing Chan & Constantine Metreweli

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  1. Winnie C. Chu
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  2. Kam-wing Chan
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  3. Constantine Metreweli
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Chu, W.C., Chan, Kw. & Metreweli, C. Scintigraphic detection of 'yo-yo' phenomenon in incomplete ureteric duplication. Ped Radiol 33, 59–61 (2003). https://doi.org/10.1007/s00247-002-0754-z

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  • DOI: https://doi.org/10.1007/s00247-002-0754-z

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