Objective To summarize and analyze the CT and MRI imaging manifestations of uterine sarcomas.Methods The clinical features,CT and MRI images of 15 patients diagnosed by surgery and pathology were analyzed retrospectively,and their characteristic manifestations were summarized and discussed.Results The 15 patients with uterine sarcomas included 8 patients with uterine smooth muscle sarcoma,4 of which had lesions confined to the uterine cavity,4 presented with large pelvic masses,and all lesions were cystic masses;1 case with undifferentiated uterine sarcoma,the lesion showed short T1WI and long T2WI signal with clear border and it showed a marginal ring-shaped high DWI signal;2 cases of uterine adenosarcoma showed mixed density lesions in the form of nodules and masses,with significant heterogeneous enhancement on enhancement scans;3 cases of low-grade endometrial mesenchymal sarcoma which showed equal or low T1WI and high or slightly high T2WI signal,and they showed significant high DWI signal;1 case of high-grade endometrial mesenchymal sarcoma which showed a large cystic solid occupancy in the pelvis,and pathologic confirmed that the lesion invaded the plasma membrane and involved local subplasma tissue of the intestinal wall.Conclusion Uterine sarcoma often presents as a large cystic mass in the pelvis with indistinct border and irregular shape,which may be accompanied by involvement of adjacent structures.The MRI presentation is characteristic,with equal or slightly low T1WI signal,mixed high T2WI signal,high or slightly high DWI signal,and heterogeneous enhancement of the mass on enhancement scans.