目的　研究卵巢畸胎瘤的CT表现。方法　经病理证实卵巢畸胎瘤 2 5例 ,全部女性 ,平均年龄 32 .8岁。其中良性囊性畸胎瘤 2 1例 ,恶性未成熟畸胎瘤 4例。全部病例作了CT扫描。结果　右侧 12例 ,左侧 13例 ,平均最大直径 81mm。 2 0例圆或椭圆形 ,5例不规则形。 2 4例见脂质成分存在。 2 1例良性者 16例显示壁结节 ,3例为实质性肿块 ,2例见脂 /液平面 ;4例恶性者密度不均匀。 2 0 /2 5例见钙化或骨化。 2例恶性者并有腹膜转移。结论　发生于卵巢的含有脂质成分和钙化或骨化斑者应考虑本病诊断。 Objective To study the CT findings of ovarian teratoma. Methods 25 cases of ovarian teratoma confirmed by pathology, all women, mean age 32.8 years old. Including benign cystic teratoma in 21 cases, 4 cases of malignant immature teratoma. All cases were made CT scan. Results The right side of 12 cases, left 13 cases, the average maximum diameter of 81mm. 20 cases of round or oval, 5 cases of irregular shape. 24 cases see the presence of lipid components. Of the 11 benign cases, 16 showed nodules, 3 were solid masses, and 2 were found to have lipid / fluid levels. The density of 4 malignant lesions was not uniform. 2 0/2 5 cases of calcification or ossification. 2 cases of malignant and peritoneal metastasis. Conclusion Ovaries containing lipid composition and calcification or ossification should consider the diagnosis of this disease.