Indian Journal of Nuclear Medicine
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Year : 2020  |  Volume : 35  |  Issue : 4  |  Page : 374-376

A rare case of a pediatric patient affected by crossed fused renal ectopia: The usefulness of dual tracer99mTc-diethylenetriamine pentaacetic acid/99mTc-dimercaptosuccinic acid scintigraphy


1 Department of Nuclear Medicine, Santa Maria Goretti Hospital, Latina, Italy
2 Department of Maternal and Child Health, UOC of Latina, University of La Sapienza Roma, Roma, Italy

Correspondence Address:
Dr. Luca Filippi
Department of Nuclear Medicine, ‘Santa Maria Goretti’ Hospital, Via Canova 04100, Latina
Italy
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijnm.IJNM_136_20

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A 9-year-old male patient, with an ultrasonography diagnosis of horseshoe kidney condition, was referred to our hospital for recurrent urinary tract infection. He was submitted to 99mTc-diethylenetriamine pentaacetic acid sequential scintigraphy that demonstrated urine stasis in the calyces of both kidneys and was also suggestive for 8-shaped right-to-left crossed-fused renal ectopia. A subsequently performed 99mTc-dimercaptosuccinic acid scan confirmed the diagnosis of crossed renal ectopia, also disclosing, through single-photon emission computed tomography (SPECT) acquisition, cortical uptake defects in both kidneys, and indicative of renal scarring due to recurrent pyelonephritis. Combined scintigraphy and appropriate technological approaches (SPECT/3D volume rendering) may be useful in selected patients with congenital anomalies.


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