An epithelioid trophoblastic tumor (ETT) is an extremely rare form of trophoblastic neoplasm. It is considered as a rare subtype 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.
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
Serum beta-HCG levels are often highly elevated 4.
Treatment and prognosis
The clinical behavior 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.
- 1. Parker A, Lee V, Dalrymple C et-al. Epithelioid trophoblastic tumour: report of a case in the fallopian tube. Pathology. 2003;35 (2): 136-40. Pathology (link) - Pubmed citation
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- 7. Meydanli MM, Kucukali T, Usubutun A et-al. Epithelioid trophoblastic tumor of the endocervix: a case report. Gynecol. Oncol. 2002;87 (2): 219-24. Gynecol. Oncol. (link) - Pubmed citation
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