Hydatidiform mole in a triplet pregnancy following gonadotropin therapy.

A first case is reported of complete hydatidiform mole with two coexistent fetuses in a triple pregnancy following human menopausal gonadotropin human chorionic gonadotropin (hMG-hCG) therapy. The molar mass and two fetuses were delivered separately at 17 weeks of gestation. The fetuses were female (155 g) and male (160 g) with individual placentae (85 g, 90 g). The hydatidiform mole (650 g) had a normal 46,XX karyotype. The sexes of the two fetuses and the karyotype of the mole are consistent with previous reports that the chromosomes of fetuses and moles are derived from both parents and the father, respectively.