Fetal ovarian cyst – a scoping review of the data from the last 10 years and a case presentation.

Abdominal cystic masses are diagnosed during the intrauterine period and have a relatively low incidence. Fetal ovarian cysts are the most common form diagnosed prenatally or immediately after birth. The pathophysiology of the development of these types of tumors is not fully elucidated, with ovarian hyperstimulation caused by maternal and placental hormones being the most accepted hypotheses. We conducted a scoping review with the aim to map the current knowledge regarding the treatment of fetal ovarian cysts diagnosed in the intrauterine period. Focusing on the articles published in the last 10 years in the specialized literature, we tried to identify a conceptualization regarding the surveillance and treatment of these anomalies. We describe the case of a 38-year-old patient, in her second pregnancy, with a physiological course of pregnancy until 29 weeks of gestation, when a cystic mass of 52/48 mm was detected in the abdomen during the routine ultrasound examination. The most likely origin was established to be the right ovary. Applying the diagnostic criteria described by Nussbaum, the detected cystic mass was of a simple type, with a thin wall, transonic content, without the presence of septa, vegetations or the appearance of intracystic hemorrhage. We observed a linear growth trend from the time of diagnosis when the diameter measured 52 mm, until 38 weeks of gestation when it reached 76 mm. A female fetus was born, weighing 3570 g, with an Apgar score of 10, with a good postnatal adaptation. On the eighth day of life, the newborn was transferred to the pediatric surgery unit where ovarian cystectomy was performed. Intraoperatively, a cystic mass was found belonging to the right ovary, with a size of 80/70/70 mm. Ovarian cystectomy was performed, with the successful preservation of ovarian tissue. The postoperative recovery had a favorable outcome. [ABSTRACT FROM AUTHOR]