Sheth S, Nussbaum A R, Sanders R C, Hamper U M, Davidson A J
Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD.
Radiology. 1988 Oct;169(1):131-6. doi: 10.1148/radiology.169.1.3047782.
The prenatal sonograms of 15 fetuses with sacrococcygeal teratoma were reviewed to determine the sonographic appearance and the role of sonography in the obstetric management. Each tumor appeared as a large mass arising from the fetal rump. The teratomas exhibited three sonographic patterns: nine were mixtures of cystic and solid components in equal proportions, four were predominantly solid with a few scattered anechoic areas, and two were unilocular cystic masses. Calcifications were detected in six cases. There was no correlation between the sonographic appearance and the presence of immature or malignant components. Ultrasonography allowed visualization of an intraabdominal component in six cases and assessment of findings that were of prognostic importance. Prenatal detection and size determination of the external component can play an important role in planning obstetric management because fetuses with a large tumor should be delivered by cesarean section to avoid dystocia and catastrophic hemorrhage during delivery.
回顾了15例患有骶尾部畸胎瘤胎儿的产前超声检查结果，以确定超声表现及超声检查在产科管理中的作用。每个肿瘤均表现为起源于胎儿臀部的巨大肿块。畸胎瘤呈现出三种超声模式：9例为囊性和实性成分比例相等的混合性肿块，4例以实性为主，伴有少量散在无回声区，2例为单房性囊性肿块。6例检测到钙化。超声表现与未成熟或恶性成分的存在之间无相关性。超声检查在6例中显示出腹腔内成分，并对具有预后重要性的发现进行了评估。外部成分的产前检测和大小测定在产科管理计划中可发挥重要作用，因为肿瘤较大的胎儿应行剖宫产以避免分娩时难产和灾难性出血。
