AMNIOTIC INCLUSION CYSTS

Amniotic inclusion cysts represent amniotic epithelium that has been entrapped within the umbilical cord during its formation (1). Occasionally a narrow tract may extend from the cyst to the amniotic surface of the umbilical cord.

ULTRASOUND

• Anechoic cystic mass.
• May contain amorphous debris and be more echogenic (2).

REFERENCES

1. deSA DJ. Diseases of the umbilical cord. In: Peerin EV, ed. Pathology of the placenta. New York: Churchill-Livingstone 1984;134-136.
2. Skibo LK, Lyons EA, Levi CS. First trimester umbilical cord cysts. Radiology 1992;182:719-722.