mixed endometrial stromal and smooth muscle tumor (MONDO_0004526) is a benign or malignant mesenchymal neoplasm of the uterine corpus. Representative examples include leiomyoma, leiomyosarcoma, and endometrial stromal sarcoma. Also known as: Stromomyoma, mixed endometrial stromal and smooth muscle neoplasm, uterine corpus soft tissue neoplasm.