Fetal ovarian hemorrhagic cyst Ultrasound

it is often difficult to accurately diagnose a fetal ovarian cyst sonographically due to many other cystic lesions having similar appearances, it is typically seen as a well-circumscribed unseptated cyst in the fetal pelvis separate from the fetal bladder, stomach and gall bladder. It is often anechoic if simple and uncomplicated. The presence of a small daughter cyst is considered a characteristic feature. Due to the relative laxity of supporting ligaments, the cyst can sometimes rise into the upper abdomen.

If there has a complication there may be fetal ascites (from cyst rupture) on or irregular echogenic intracystic material (from a hemorrhage).