The Value of Magnetic Resonance Imaging Histograms in the Preoperative Differential Diagnosis of Endometrial Stromal Sarcoma and Degenerative Hysteromyoma oleh Xiao-Nan Zhang, Man Bai, Ke-Ran Ma, Yong Zhang, Cheng-Ru Song, Zan-Xia Zhang, Jing-Liang Cheng