Epithelioid trophoblastic tumour

An epithelioid trophoblastic tumour (ETT) is an extremely rare form of trophoblastic neoplasm. It is considered as a rare sub type of gestational trophoblastic disease 2,4.

It typically presents in women of reproductive age (peak age in late 30's) and can occur between 1 and 18 years following a previous gestation 3.

Location

It most commonly occurs in the uterus and usually (albeit remote) in association with a gestational event. Rare extra uterine locations have also been described which include

  • Fallopian tube
  • broad ligament 5
Markers

Serum beta-HCG levels are often highly elevated 4.

The clinical behaviour of an ETT is often difficult to predict and while most cases follow a benign course following resection, there is a potential for metastatic disease 3.

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Article information

rID: 15212
System: Gynaecology
Tag: cases
Synonyms or Alternate Spellings:
  • Epithelioid trophoblastic tumour (ETT)
  • Epithelioid trophoblastic tumours
  • Epithelioid trophoblastic tumors
  • Epithelioid trophoblastic tumor

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