[Magnetic resonance tomography in follow-up of hydatidiform mole].

The value of magnetic resonance imaging (MRI) was studied in a case of a gestational trophoblastic tumour. In addition to the tumour size, MRI made it possible to measure necrotic areas, which are assumed to be a sign of response to chemotherapy. Moreover, uterine zonal anatomy and subserosal uterine veins yielded important information on tumour biology. Complete remission was induced in high-risk patients by etoposide, methotrexate, and actinomycin D treatment.