Worldwide controversies in gestational trophoblastic neoplasms.

This article reviews worldwide controversies concerning gestational trophoblastic neoplasms (hydatidiform mole, invasive mole, and choriocarcinoma). The epidemiology, endocrinology, histopathologic grading, classification, diagnosis, treatment, management and follow-up (including chemotherapy, irradiation, and immunotherapy) of gestational trophoblastic neoplasms - particularly molar pregnancies - are discussed; and ways to help create a standardized classification system and provide optimal treatment for each type of patient are suggested.