Uterine Corpus High Grade Endometrial Stromal Sarcoma

**Semantic type:** Neoplastic Process

**Definition:** A rare, high-grade sarcoma that arises from the endometrial stroma. It is characterized by round cell morphology. It was previously also known as undifferentiated uterine sarcoma. In 2014, high grade endometrial stromal sarcoma was reclassified and is currently considered a distinct and rare neoplasm. It appears to have a prognosis that falls between low grade endometrial stromal sarcoma and undifferentiated sarcoma.

**Synonyms:** - Endometrial Stromal Sarcoma, High Grade - High Grade ESS - High Grade Endometrial Stromal Sarcoma - High-Grade ESS - High-Grade Endometrial Stromal Sarcoma - Uterine Corpus High Grade ESS - Uterine Corpus High-Grade Endometrial Stromal Sarcoma - YWHAE-FAM22 ESS - YWHAE-FAM22 Endometrial Stromal Sarcoma - YWHAE::FAM22 Endometrial Stromal Sarcoma