Monochorionic monoamniotic pregnancy are considered high risk gestations and the fetal outcome is at times unpredictable. Correct diagnosis and counselling are extremely important, especially regarding the risk of unexpected fetal demise. We present the rare case of a monochorionic monoamniotic twin pregnancy with early identification of cord entanglement and the characteristic ultrasound findings in the first trimester of pregnancy.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000087PMC
http://dx.doi.org/10.3390/diagnostics11030520DOI Listing

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  • Conjoined twins, or Siamese twins, are a rare type of monochorionic twinning requiring specialized imaging for diagnosis and monitoring.
  • Ultrasound is typically the first choice for screening, while MRI provides detailed anatomical information when needed.
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  • * A 32-year-old woman undergoing assisted reproductive technology showed two embryos with regular heartbeats and tightly entangled umbilical cords at 8.5 weeks gestation, identified through various ultrasound techniques.
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Twin pregnancy is considered high-risk pregnancy because of its various effects on maternal and fetal physiology. Twin pregnancy can be dizygotic or monozygotic, the latter being less common. Depending upon the period of separation of an embryo, monozygotic twins can share amniotic cavity and placenta with the monochorionic monoamniotic form being the least common type.

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