Placental cyst

Placental cyst refers to a simple cystic lesion that develops in relation to the placenta.

Their estimated prevalence is at ~2-20% of all pregnancies.


They may be divided into two types dependant on location:

Antenatal ultrasound

May be seen as anechoic rounded to ovoid cysts in association with placental tissue. Colour Doppler interrogation shows no evidence of any vascular flow.

  • large cysts (often those over 4.5 cm) or multiple cysts may be a causative factor in intra-uterine growth restriction (IUGR) especially when attached in close proximity to the umbilical cord insertion site 1,3.
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Article Information

rID: 13479
Tag: cases
Synonyms or Alternate Spellings:
  • Placental cysts

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