Complete hydatidiform mole with coexistent live fetus in dichorionic twin gestation.

CASE REPORT: A 28-year-old patient gravida 3, para 2 was admitted at 16 weeks' gestation with the diagnosis of complete hydatidiform mole with coexistent live fetus (CHMCF) in dichorionic twin gestation. The betaHCG level was 530,000 mIU/ml. The pregnancy was terminated by hysterotomy. OUTCOME: Histopathologic analysis revealed a hydatidiform mole and a 17-week-old male fetus attached to the normal looking placenta by a double-vesseled cord. A final karyotype on cord blood samples confirmed normal 46 XY. Weekly performed serial betaHCG values showed declining trend and were undetectable by 10 weeks post delivery.