Monozygotic twins with discordant karyotypes: a case report.
case_report · Level V
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- Record sourced from PubMed, PMID 15343200.
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Abstract
A monochorionic twin pregnancy had normal male karyotype on chorionic villous sampling. At delivery, one twin presented as morphologically normal, the other as trisomy 21. A twinning event and chromosome division error shortly after conception resulted in monozygotic twins with discordant tissue karyotypes and blood chromosome chimerism for trisomy 21.
Medical subject headings
- Down Syndrome
- Twins, Monozygotic