A single viable fetus was seen in cephalic presentation, with average gestational age of 20 weeks and 2 days. No gross congenital anomaly was seen.
A normal placenta was seen along the anterior wall of the uterus, lying in upper segment.
A well defined discoid, echogenic, vesicular lesion, approximately measuring 145 mm x 92 mm, interspersed with multiple small cysts was seen along the posterior wall of the uterus (hydatidiform mole-like picture). Peripheral vascularity was seen in the lesion, on color Doppler interrogation. However, no internal vascularity was evident. The lesion appeared to be continuous with the normal placenta, posterosuperiorly. Umbilical cord seen inserting into the normal placenta anteriorly.
The myometrium-lesion interface was well defined and no myometrial invasion was seen.
Both ovaries were normal. No significant follicle/cyst was seen in either of the ovaries.