多形性横纹肌肉瘤(pleomorphic rhbdomyosarcoma,PRMS)好发于成年人,在横纹肌肉瘤的4种亚型中,PRMS较为少见,其多发生于四肢和躯干软组织,发生于子宫腔罕见。现将本院1例子宫PRMS的临床病理、免疫组化特征进行分析,同时结合该肿瘤临床特征进行讨论。1材料与方法1.1临床资料患者女性,64岁。绝经16年,半个月前出现阴道不规则出血,曾有一次阴道流出少 Pleomorphic rhbdomyosarcoma (PRMS) occurs predominantly in adults. Of the four subtypes of rhabdomyosarcoma, PRMS is rarer and occurs mostly in the limbs and trunk and soft tissue, with a rare occurrence in the uterine cavity. We now 1 case of uterine PRMS clinicopathological, immunohistochemical characteristics were analyzed, combined with the clinical features of the tumor were discussed. 1 Materials and Methods 1.1 Clinical data Patients Female, 64 years old. Menopause 16 years, two months ago, irregular vaginal bleeding occurred, there was a vaginal outflow less