子宫肌瘤或子宫纤维瘤是生育年龄妇女最常见的良性肿瘤,黑人妇女尤为常见。在美国,子宫切除术最常见的手术指征是肌瘤,占所有子宫切除术的30%,每年手术费用超过10亿美元。所以,应用安全有效的非手术治疗相当重要。研究旨在比较使用5mg和10mg米非司酮在缩小肌瘤大小和缓解症状及 Uterine fibroids or uterine fibroids are the most common benign tumors in women of childbearing age, especially in black women. In the United States, hysterectomy is the most common indication of fibroids, accounting for 30% of all hysterectomies, costing more than $ 1 billion per year. Therefore, the application of safe and effective non-surgical treatment is very important. The study aimed to compare the use of 5mg and 10mg of mifepristone in reducing fibroid size and relieving symptoms and