A case report of partial molar pregnancy associated with a normal appearing dizygotic fetus

Partial molar pregnancy is a rare entity in which there is usually a triploid abnormal fetus
associated with a large placenta with cystic changes. The incidence of a normal diploid
fetus and a partial molar placenta is extremely rare. Here we report a case of partial molar
pregnancy in which a normal appearing male fetus with diploid karyotype coexist. A
focal placental abnormal region was detected at 11 week of gestation as enlargement
associated with cystic changes. Fetus showed no obvious abnormality. The patient un-
derwent amniocentesis and the result was compatible with a normal diploid male fetus.
Regarding these findings the patient continued her pregnancy under close observation
and advanced sonographic evaluations were made to rule out other differentials.
There were no obstetric complications until the 26th gestational week when preterm
rupture of the membranes occurred. The patient underwent induced vaginal delivery and the
products were sent for pathologic evaluation which confirmed the partial molar changes