Sex-discordant monochorionic twins with blood and tissue chimerism

Am J Med Genet A. 2015 Apr;167A(4):872-7. doi: 10.1002/ajmg.a.37022. Epub 2015 Feb 23.

Abstract

We report on a pair of normally conceived monochorionic/dizygotic (MC/DZ) sex discordant twins. The comparison of blood and skin genotypes revealed that the chimerism was also present in the skin. We conjecture about the developmental origins of this case.

Keywords: chimerism; monochorionic/dizygotic twin pregnancy; spontaneously conceived MC/DZ twins; twin-twin transfusion syndrome.

Publication types

  • Case Reports
  • Twin Study

MeSH terms

  • 46, XX Disorders of Sex Development / diagnosis*
  • 46, XX Disorders of Sex Development / genetics
  • Abnormalities, Multiple / diagnosis*
  • Abnormalities, Multiple / genetics
  • Chimerism
  • Female
  • Humans
  • Infant
  • Male
  • Polymorphism, Single Nucleotide
  • Skin / pathology
  • Twins, Dizygotic / genetics*