title: Low-grade endometrial stromal sarcoma with extensive sex cord differentiation, heterologous elements, and complex atypical hyperplasia: Case report and review of literature.
abstract: •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.
authors.affiliation: University of Colorado, Department of Pathology, Aurora, CO, United States.
authors.forename: Abby M
authors.initials: AM
authors.lastname: Richmond
authors.affiliation: University of Colorado, Department of Pathology, Aurora, CO, United States.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Rohrer
authors.affiliation: Denver Health Medical Center, Department of Obstetrics and Gynecology, Denver, CO, United States.
authors.forename: Susan A
authors.initials: SA
authors.lastname: Davidson
authors.affiliation: University of Colorado, Department of Pathology, Aurora, CO, United States.
authors.forename: Miriam D
authors.initials: MD
authors.lastname: Post
keywords: Endometrial stromal sarcoma; Endometrial stromal tumor; Uterine tumor resembling ovarian sex cord tumor