Abstract
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.
Highlights
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More recent data reported a lower risk of unexpected fetal death, of about 5–10%, after excluding cases of discordant structural anomalies, spontaneous miscarriage, or complications related to monochorionicity such as twin-to-twin transfusion syndrome (TTTS) [4]
Cord entanglement has been evoked as the main cause of sudden death, other mechanisms such as acute exsanguination through large umbilical anastomoses are likely to be involved, as cord entanglement is present in almost all monoamniotic twins and most of them have a good prognosis after 20 weeks despite this finding [3]
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Received: 15 February 2021 Accepted: 9 March 2021 Published: 15 March 2021 Monochorionic monoamniotic twin pregnancy is rare, with an estimated prevalence of about 1 in 10,000 pregnancies, representing 1–5% of all monochorionic twins [1].
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