Differential diagnosis between sacrococygeal teratoma and acardiac twin

Perinatal neoplasia account 2.6 % of childhood tumours; 35 % of them are teratomas. 80 % of urogenital and anorectal tumours that cause anatomical and fuctional problems are
sacrococygeal teratomas. 21 years old, G1 woman referred to our hospital with a mass lesion in the fetus at 38 th gestational weeks of pregnancy. The ultrasonography result was
97*72 mm solid mass containing 53*45 mm cystic lesion in it. We perform second level ultrasonography at our clinics. Since the patient referred at very late gestational weeks; mass lesion could not be localized accurately. With these findings possible differential diagnosis are sacrococygeal teratoma or acardiac twin.

Akardiyak ikiz tanýsý ile karýþan sakrokoksigeal teratom