Fetal ovarian cysts: a report of three cases managed by intrauterine aspiration.

Small follicular or functional theca-lutein cysts are a common finding in fetal and neonatal ovaries. After delivery, decrease of hormonal stimulation may lead to spontaneous resolution of the cyst. A high rate of complication has been underlined by recent studies, the most common being ovarian torsion with subsequent loss of the ovary. Because torsion may happen with any size of cyst, however large or small, we suggest in utero decompression even in small fetal ovarian cysts (< 5 cm). We report here three cases of such cysts managed by intrauterine aspiration with good outcome and no further need for neonatal surgery. In all cases cytology of the cyst aspirate demonstrated numbers of granulosa cells and fluid biochemistry showed a high amount of estradiol, progesterone, and testosterone that confirmed the etiology as ovarian. Despite the small size of the cysts, no technical difficulties were encountered and no maternal or fetal morbidity occurred. Prenatal management of fetal ovarian cysts remains controversial, however, and our limited experience needs to be assessed on a larger number of cases.