Lees R F, Williamson B R, Brenbridge N A, Buschi A J, Teja K
Radiology. 1980 Mar;134(3):717-8. doi: 10.1148/radiology.134.3.7355224.
Sacral teratoma is rarely diagnosed in utero. In the case presented, gray-scale sonography revealed a teratoma in utero, demonstrated the proportion of solid and cystic components, and identified calcification. These are important features, since solid tumors lacking calcification are usually malignant, and cystic or complex tumors as well as those with calcification are usually benign.
骶尾部畸胎瘤很少在子宫内被诊断出来。在本病例中，灰阶超声检查显示子宫内有一个畸胎瘤，明确了实性和囊性成分的比例，并发现了钙化。这些都是重要特征，因为缺乏钙化的实性肿瘤通常是恶性的，而囊性或复杂肿瘤以及有钙化的肿瘤通常是良性的。
