Abstract
The diagnosis and management of a heterokaryotypic monochorionic pregnancy, in which one of twins had trisomy 13, is presented. Monozygosity and discordant karyotypes were confirmed by amniocentesis of both the sacs. Radiofrequency ablation of the trisomic twin was successfully performed at 18-weeks gestation and the pregnancy ended at term with the birth of a healthy girl who remains well on follow-up at 12 months of age. We reiterate the importance of early amniocentesis of both the sacs in the presence of discordant fetal abnormalities and consideration of selective fetal termination to optimise the outcome of heterokaryotypic monochorionic twin pregnancies.
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Acknowledgements
We thank Dr Karen Carpenter, Department of Cytogenetics, Nottingham City Hospital, for the Quantitative Fluorescent-PCR analysis.
Patient consent has been obtained for the publication of this manuscript.
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Dixit, A., Tanteles, G., Ocraft, K. et al. Monozygotic twins discordant for trisomy 13: counselling and management issues. J Perinatol 32, 639–641 (2012). https://doi.org/10.1038/jp.2011.145
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DOI: https://doi.org/10.1038/jp.2011.145
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