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[Fetal ovarian cyst: prenatal diagnosis, perinatal outcome and treatment. Case series and literature review].

BACKGROUND
Ovarian cysts in fetal abdominal tumors are more frequently diagnosed during pregnancy. Most of the time are usually small, asymptomatic and resolve spontaneously during pregnancy or in early neonatal life.


OBJECTIVE
To describe the clinical and ultrasound cases with prenatal diagnosis of ovarian cyst treated in our center between 2002 and 2005.


MATERIAL AND METHODS
Descriptive and observational cases of fetal ovarian cyst diagnosedbefore birth. The variables maternal and perinatal most relevant clinical data obtained at diagnosis and after birth.


RESULTS
We explored 9.198 fetuses, of which there were 10 cases of ovarian cyst diagnosed between the second and third trimesters of pregnancy. All cases were unilateral andsonographic appearance homogeneous. In four cases there was spontaneous disappearance during the remaining gestational period. In the other six cases, four missing in the first 12 months and only two image persisted more than a year.


CONCLUSIONS
Based on our results and in accordance with the literature, the prenatal diagnosis of fetal ovarian cyst is usually associated with a conservative approach with serialultrasound monitoring to rule out rare serious complications. During the neonatal period spontaneous disappearance is often the case and the surgical approach is indicated in cases with suspected persistent or torsion or hemorrhage, with cystectomy as first choice.