Abstract
Five cases of crossed fused renal ectopia, all confirmed by either computed tomographic scan or intravenous urography, were diagnosed sonographically. The sonographic appearance of this entity consists of a characteristic anterior and/or posterior notch, difference in orientation of the 2 collecting systems in the fused kidneys, and absence of a kidney in the contralateral renal fossa, or elsewhere in the body, such as the pelvis. The inability to diagnose this condition correctly may lead to the misdiagnosis of a renal mass or infiltrative disease occupying the contralateral renal fossa. Computed tomographic scans will also identify the anomaly.
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Goodman, J.D., Norton, K.I., Carr, L. et al. Crossed fused renal ectopia: Sonographic diagnosis. Urol Radiol 8, 13–16 (1986). https://doi.org/10.1007/BF02924064
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DOI: https://doi.org/10.1007/BF02924064