Horseshoe Kidney: Discordance in Monozygotic Twins
It is generally assumed that a demonstrated congenital defect in one of a pair of identical twins will be present in the other twin as well. Genotypic identity, however, does not always mean phenotypic identity. Discordant abnormalities in identical twins have been sporadically reported in the literature. We have recently seen a pair of identical twins who demonstrated just such discordance. Horseshoe kidney was present in one twin but absent in the other. We have been unable to find any previous report in the literature of the discordant occurrence of horseshoe kidney in monozygotic twins.
KeywordsIdentical Twin Nocturnal Enuresis Neurogenic Bladder Situs Inversus Horseshoe Kidney
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