Low-grade endometrial stromal sarcoma with extensive sex cord differentiation, heterologous elements, and complex atypical hyperplasia: Case report and review of literature

摘要

Highlights ? Endometrial stromal sarcoma (ESS) may have sex cord differentiation, usually focal. ? Diagnosis of ESS is difficult when variant morphology predominates. ? Prognosis differs between ESS and UTROSCT; therefore, distinction is critical. ? Extensive tumor sampling is mandatory to identify neoplastic endometrial stroma. ? Sex cord differentiation may be associated with endometrial hyperplasia.