Uterine Neoplasms [Disease/Finding] Endometrial Neoplasms [Disease/Finding] Tumors or cancer of ENDOMETRIUM, the mucous lining of the UTERUS. These neoplasms can be benign or malignant. Their classification and grading are based on the various cell types and the percent of undifferentiated cells. C7182 N0000003502 Neoplasms, Endometrial Endometrial Neoplasms 989735 123844007 M0025700 D016889 Endometrial Neoplasms C0014170