Magnetic resonance experience of a twin pregnancy with a normal fetus and hydatidiform mole: a case report.

A case of twin pregnancy with a coexistent hydatidiform mole after in vitro fertilization is presented. Prenatal magnetic resonance (MR) imaging at 20 gestational weeks demonstrated a normal fetus and a distinct junction between the molar tissue and myometrium suggesting no evidence of myometrial invasion. Clinically, the rare disease entity involves a high risk of maternal complications and intrauterine fetal death. The application of ultrafast MR imaging for prenatal examination provides important additional information for prenatal counseling and obstetric management.