[Extracorporeal uterine endometrial stromal type sarcoma]

Three extracorporal uterine endometrial stromal-like sarcomas are reported. One of them was a bilateral ovarian sarcoma, with extensive infiltration and vascular compromise of paratubarian tissues, parametrium, omentum, and periureteral tissue. Endometriotic foci were also found in the ovaries and periureteral tissue. The other two cases corresponded to localized polypoid lesions of the endocervical and vaginal mucosa, respectively. None of these cases was associated with endometriosis. Histologically, the tumors were made up of rounded cells, with scant cytoplasm, numerous small vessels and low mitotic index. The findings correspond to those of low grade endometrial stromal sarcomas. The present cases emphasize the multipotentiality of müllerian organs. Not only different types of paramesonephric epithelial tumors can develop from these organs, but also different müllerian sarcomas.