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Low Grade Endometrioid Stromal Sarcoma
Definition 1
An infiltrating mesenchymal tumor arising from the uterine corpus, cervix, vagina, and the ovary. It is characterized by the presence of oval to spindle-shape cells that resemble the cells of the endometrial stroma, without evidence of significant atypia and pleomorphism. Numerous small vessels are also present. It is usually characterized by indolent growth and late recurrences. (NCI Thesaurus)
Definition 2
An endometrial stromal tumor with features of a stromal nodule but with the additional findings of myometrial infiltration and/or vascular space invasion. (NCI Thesaurus)
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