Marginal cord insertion

Marginal cord insertion is a type of abnormal cord insertion.

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.

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)

Some authors state that there is no increased risk 5.

Progression into a velamentous cord insertion as a result of "placental trophotropism" can be seen in later stages of pregnancy.

Ultrasound - obstetric
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Article information

rID: 13468
System: Obstetrics
Section: Pathology
Synonyms or Alternate Spellings:
  • Battledore placenta
  • Battledore cord insertion

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Cases and figures

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    Figure 1: marginal cord insertion
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    Case 1
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