Fetal enteric duplication cyst

Fetal enteric duplication cysts are enteric duplication cysts presenting in utero.

They result from an abnormal recanalisation of the gastrointestinal tract. They comprise of a two-layer smooth muscle wall and an internal epithelium of a respiratory or intestinal type. These cysts may or may not communicate with the lumen of the gastrointestinal tract. They can be cystic or tubular (with the latter more likely to communicate with the gastrointestinal tract). 

Location

They can occur anywhere along the gastrointestinal tract although a greater predilection towards the ileal region (~40%) 3.

Associations

They are associated with additional abnormalities up to a third of the cases. Which are most commonly vertebral anomalies 3.

Antenatal ultrasound

Usually seen as an anechoic cystic lesion within the abdomen that is separate from normal hollow structures such as the bladder and stomach. 

Relatively characteristic signs that have been described include 1:

Occasionally they can also present as an echogenic mass 3  (probably due to haemorrhage).

If there is a complicating bowel obstruction, there may be evidence of polyhydramnios.

Recognised complications include:

Considerations on ultrasound for an anechoic mass include:

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Article Information

rID: 13493
Section: Pathology
Synonyms or Alternate Spellings:
  • In-utero enteric duplication cyst
  • Fetal enteric duplication cysts
  • In-utero enteric duplication cysts

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