目的 研究盆腔内含脂肪密度的肿块的CT诊断和鉴别诊断。方法 本组经手术病理证实7例,均为女性,全部病例均做B超和CT平扫,其中2例还做了增强扫描,1例做了MRI检查。结果 盆腔内畸胎瘤5例,子宫肌瘤脂肪变1例,盆腔内脂肪瘤1例。结论 CT检查对盆腔内含脂肪密度的肿块检查价值很大,仔细分析肿块起源和密度、内部结构情况有助于提高诊断的准确性。 Objective To study the CT diagnosis and differential diagnosis of lumps containing fat density. Methods Seven cases were confirmed by operation and pathology in this group, all of them were female. All the cases were performed with B-mode ultrasonography and CT plain scan. Among them, 2 cases also underwent contrast-enhanced scanning and 1 case underwent MRI examination. Results There were 5 cases of pelvic teratoma, 1 case of uterine fibroids and 1 case of pelvic lipoma. Conclusion The CT examination is of great value in the examination of pelvic fat masses containing tumors. A careful analysis of the origin, density, and internal structure of the tumors will help improve the accuracy of the diagnosis.