Marginal cord insertion
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Marginal cord insertion is a type of abnormal cord insertion.
Epidemiology
The estimated incidence is at ~7% 1 of singleton pregnancies but ~25% of twin pregnancies. Hence, it is very important to locate the umbilical cord in all patients, particularly in high risk pregnancy.
Pathology
In this situation the cord insertion is too close to the placental margin (usually defined as <2 cm 5 although some references define it as <1 cm 3,6)
Associations
- monochorionic twins pregnancy
- intrauterine growth retardation (IUGR)
- preterm birth 7
Some authors state that there is no increased risk 5.
Treatment and prognosis
Progression into a velamentous cord insertion as a result of "placental"placental trophotropism" can be seen in later stages of pregnancy.
-</ul><h4>Treatment and prognosis</h4><p>Progression into a <a href="/articles/velamentous-cord-insertion">velamentous cord insertion</a> as a result of "placental trophotropism" can be seen in later stages of pregnancy.</p>- +</ul><p>Some authors state that there is no increased risk <sup>5</sup>.</p><h4>Treatment and prognosis</h4><p>Progression into a <a href="/articles/velamentous-cord-insertion">velamentous cord insertion</a> as a result of "<a title="Placental trophotropism" href="/articles/placental-trophotropism">placental trophotropism</a>" can be seen in later stages of pregnancy.</p>
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