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KMID : 0811820080120020262
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Journal of Korean Society of Pediatric Nephrology
2008 Volume.12 No. 2 p.262 ~ p.266
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A Case of Crossed Fused Renal Ectopia with Multicystic Dysplasia
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Seo Eun-Min
Shim Eun-Jung
Lee Kwan-Seob
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Abstract
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Crossed renal ectopia is a congenital malformation in which both kidneys lie on the same side of the spine, usually side by side longitudinally. More often on the right side. Fusion of the two renal units is eight times more common than nonfusion. Although crossed renal ectopia is uncommon, this unusual entity must be considered in an infant when cystic mass in the abdomen or pelvis paticularly if no kidney can be found on the opposite side. In many cases of crossed fused ectopia with multicystic dysplastic kidney(MCDK), the diagnosis can be strongly suspected from the sonogram, and no other studies may be necessary. However, both intravenous urography and isotope renography is useful to assess the function of the crossed kidney. Crossed renal ectopia and MCDKs are associated with a greater incidence of ureteropelvic junction obstruction and reflux. So, screening voiding cystourethrography should be performed. Very few studies of MCDK in the setting of crossed fused ectopia have been reported. We have experienced a 3-year-old boy with crossed fused renal ectopia with multicystic dysplasia.
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KEYWORD
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Crossed renal ectopia, Multicystic dysplastic kidney
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