Treatment patterns for leiomyosarcomas, endometrial stromal sarcomas and adenosarcomas: a national cancer database study
1University of Utah School of Medicine, Salt Lake City, UT 84112, USA
2Department of Radiation Oncology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
3Huntsman Cancer Institute, Salt Lake City, UT 84112, USA
4Department of Gynecologic Oncology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
DOI: 10.22514/ejgo.2023.019 Vol.44,Issue 2,April 2023 pp.25-31
Submitted: 01 November 2022 Accepted: 16 March 2023
Published: 15 April 2023
Uterine sarcomas are a rare, heterogenous, group of cancers with limited data on optimal adjuvant treatment. We examined patterns of care for leiomyosarcomas (LMS), endometrial stromal sarcomas (ESS), adenosarcomas (AS), and mixed uterine sarcomas and assessed the utilization of adjuvant therapy for each histology. The National Cancer Database (NCDB) was queried for patients with non-metastatic uterine sarcoma diagnosed between 2004 and 2018 treated with surgery. Uterine carcinosarcomas were excluded. Adjuvant patterns of care and temporal treatment trends are evaluated, stratified by histology. Multivariable logistic regression model was constructed to identify predictors of receipt of radiation adjuvant therapy. Among 12,806 patients, 88% received a total hysterectomy and bilateral salpingo-oophorectomy (TH+BSO) and 42% received lymph node sampling (LNS). Surgery alone was the most common treatment modality for all histology groups (59.0%). Surgery with chemotherapy was the second most common form of treatment for LMS (33.1%) and mixed type tumors (29.6%). Surgery with radiation was the second most common treatment for high-grade ESS (10.8%) and AS (11.8%). External beam radiation therapy (EBRT) was the most common type of adjuvant radiation therapy utilized. Adjuvant radiation therapy (RT) has declined in LMS, from 27% in 2004 to 3% in 2018. Adjuvant chemotherapy for all histology groups has increased in use from 10% in 2004 to 28% in 2018. For uterine sarcomas, TH+BSO without LNS was the main surgical modality. Adjuvant therapy for uterine sarcomas is not commonly used, however high risk features including stage II/III, high grade, and more extensive lymph node sampling appear to increase the likelihood of adjuvant RT. The utilization of adjuvant chemotherapy in uterine sarcomas has increased over time, while RT has been decreasing.
Uterine sarcoma; Treatment; Radiation therapy; Chemotherapy; Surgery; Leiomyosarcoma; Endometrial stromal sarcoma; Adenosarcoma
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