BACKGROUND:

The partial or incomplete mole represents 30% of gestational trophoblastic diseases. However, the incidence of partial mole with a viable fetus is an uncommon presentation, with an incidence of 1 per 100,000 pregnancies.

CASE REPORT:

a 27-year-old female with a gyneco-obstetric history of 3 pregnancies and 2 births, without comorbidities or alterations of importance for the current condition; pregnancy of 30.1 weeks according to the date of last menstruation and diagnosis of gestational trophoblastic disease (partial spring), placenta previa and arcuate uterus. The ultrasound evidenced hydropic vesicles, compatible with gestational trophoblastic disease (incomplete mole). The amniocentesis was performed at 16.3 weeks of pregnancy. The karyotype 46, XX was found. It was decided to terminate the pregnancy by emergency cesarean section. Since it was a pregnancy with high morbidity and mortality, and the patient had parity satisfied, it was decided to perform a cesarean-hysterectomy using the Esperanza-Bautista technique. A female newborn was born, weighing 1416 g, Capurro 3 weeks and APGAR 7/9. The pathology report was abnormal proliferation of the trophoblast, vesicles and villi. At the moment the patient remains in weekly follow-up with no apparent complications.

CONCLUSIONS:

Molar pregnancy with a viable fetus has an infrequent presentation. Early diagnosis, close prenatal follow-up, and multidisciplinary management condition perinatal success.