Metastatic placental site trophoblastic tumor: a case report

Placental site trophoblastic tumor (PSTT) is very rare. It is an unusual variant of gestational trophoblastic neoplasia usually confined to the uterus, although 10% of patients have metastases. The clinical behaviour of PSTT varies and despite knowledge of its histology, diagnosis of this rare form of trophoblastic disease and prediction of its biological behaviour remains difficult due to only a few cases reported in literature.