The Usage of 2 and 3-Dimensionel Ultrasound in Prenatal Diagnosis of Sacrococcygeal Teratoma: Report of a Case

Sacrococcygeal teratoma (SCT) with an estimated prevalence of 1:40.000 in living deliveries, accounts for the half of all fetal tumors. Although it occasionally poses a benign aspect, the rate of high mortality and morbidity due to this tumor occurs as a result of cardiac failure and hydrops. Poor prognostic factors of these tumors are the apparent (occurrence) of hydrops before 30 weeks in utero and occupying more solid component. In prenatal term characterization of this tumor can be made by B scan Doppler ultrasonography and three-dimensional (3D) ultrasonography. By the help of obstetric ultrasonographic evaluation of a 27 years old G2P1 pregnant, we determined a regular bordered and heterogenic endo-structured mass placed on the sacrococcigeal region of an 18 week old fetal girl according to biometrical measurements. Dimensions of this mass were 22x23 mm. Closed follow up was made till to term because of the demand of her parents for continuing the pregnancy. Since there were a sudden enlargement of tumor, just before occurrence of complications like fetal hyrops or plesantomegaly, delivery was achieved successfully without complication in 36th week. As a result of operation, histopathological examination of this mass revealed immature teratoma.