Marginal cord insertion in placenta and true knot in umbilical cord: a case report

Background: The fetus and placenta are connected by the umbilical cord. Atypical cord attachment that occurs during pregnancy is called marginal cord insertion. However, placing the umbilical cord usually does not cause problems when a woman is pregnant. This study reported a case of marginal cord insertion in the placenta and a true knot in the umbilical cord. Case Presentation: We reported a case of a 39-year-old pregnant woman who was found to have an umbilical cord attached to the edge of the placenta on ultrasound in a singleton pregnancy. The appearance of the umbilical cord insertion was at the edge of the placenta, and there is a true knot in the umbilical cord that was not diagnosed during pregnancy.The incidence of true umbilical cord knots has been found to range from 0.04% to 3%. They are linked to four times the risk of stillbirth and significant perinatal morbidity (11%) rates. A four-dimensional and color Doppler examination is essential to diagnose a real umbilical cord. A more thorough examination of the anomaly and repeated confirmation with power and color Dopplers are required for an accurate diagnosis. Conclusion: We reported a case of a 39-year-old pregnant woman who was found to have an umbilical cord attached to the edge of the placenta on ultrasound in a singleton pregnancy. The appearance of the umbilical cord insertion is at the edge of the placenta, and there is a true knot in the umbilical cord that is not diagnosed during pregnancy.