To examine utility of measurement of proportions of free beta-subunit of human chorionic gonadotropin (hCG) in diagnosis of placental site trophoblastic tumor (PSTT) and nontrophoblastic neoplasm in patients with persistent low hCG levels and patients with history of gestational trophoblastic diseases.
Blood test for placental site trophoblastic tumor and nontrophoblastic malignancy for evaluating patients with low positive human chorionic gonadotropin results.
