Fetal ovarian cyst

Abstract

This case report demonstrates a complex fetal ovarian cyst. A fetal ovarian cyst is a fluid-filled ovarian tumor. Ovarian cysts are rarely detected in infants but are slightly more common on fetal sonography. The majority of cysts are benign corpus luteal cysts. The size and appearance of the cysts may vary. The largest cyst could possibly occupy the entire abdomen. The cyst will most likely be anechoic, but it can be complicated due to hemorrhage or torsion. Difficulties may arise when trying to differentiate a large ovarian cyst from other cystic lesions, such as enteric or mesenteric cysts. Both placental and maternal hormones can cause excess stimulation of the fetal ovary. A decrease in hormone stimulation after birth causes most neonatal ovarian cysts to spontaneously regress.