DIAGNOSIS OF FETAL OVARIAN CYSTS - MONITORING AND DIFFERENTIAL-DIAGNOSIS

Aim: To find better diagnostic and prognostic criteria for the prenata l evaluation of suspected fetal ovarian cysts. Method: 13 abdominal tu mors were diagnosed sonographically and evaluated. The ultrasound equi pment was an Acuson Computer Sonograph XP 128 with 3,5 MHz sector tran sducer (Acuson) and a realtime-ultrasound machine Sonoline SL 1 with 3 MHz linear transducer (Siemens). Picture documentation was made by Ag fa Scopix camera, Sony printer documentation UPS or Panasonic video do cumentation VHS. If a cyst was aspirated, hormonal concentrations were measured by RIA (Radioimmunoassay). Protein levels electrolytes were also analysed and cytology performed. Results: Fetal ovarian cysts are rare connatal abdominal tumours of unknown pathogenesis. Typical sono graphic findings are cystic structures, partially septated with homoge nous inner structures and sharp outer contours. Their ovarian origin i s documented by demonstrating high hormonal activity (estrogen, proges tin, testosterone). Sonographic structural variations may hint at tiss ue trauma or a rare fetal teratoma. Conclusions: Ultrasound guided cys t puncture with fluid analysis is helpful in the differential diagnose of suspected fetal ovarian cysts. This approach will also help avoid obstetric procedures with possible prematurity complications and post- delivery abdominal surgery. Ultrasound can be used for monitor clinica lly asymptomatic, uncomplicated cysts, both pre-and postnatally to avo id removal of normal ovarian tissue.