J Gynecol Oncol.  2020 Jul;31(4):e53. 10.3802/jgo.2020.31.e53.

Stage III uterine serous carcinoma: modern trends in multimodality treatment

• Li JY
• Young MR
• Huang G
• Litkouhi B
• Santin A
• Schwartz PE
• Damast S

• KMID: 2511964
• DOI: http://doi.org/10.3802/jgo.2020.31.e53

Abstract

Objective
To examine outcomes in a modern treatment era for stage III uterine serous carcinoma (USC).
Methods
Fifty women were retrospectively identified as 2009 International Federation of Gynecology and Obstetrics stage III USC patients who received radiotherapy (RT) at our institution between 1/2003–5/2018. The patients were divided into 2 cohorts: 20 in the early era (2003–2010) and 30 in the modern era (2011–2018). Patient characteristics were compared using χ 2 tests for categorical variables and t-tests for continuous variables. Recurrence free survival (RFS) and overall survival (OS) were analyzed with Kaplan-Meier estimates, the logrank test, and Cox proportional hazards.
Results
The modern era differed from the early era in the increased use of volume-directed external beam RT (EBRT) as opposed to vaginal brachytherapy (VB) alone (33.3% vs 5.0%, p=0.048), minimally invasive surgery (56.7% vs. 25%, p=0.027), sentinel node sampling (26.7% vs. 0%, p=0.012), computed tomography imaging in the perioperative period (63.3% vs. 30%, p=0.044), and human epidermal growth factor receptor 2/neu testing (96.7% vs. 55%, p=0.001). Median follow-up for early and modern eras was 37.27 and 33.23 months, respectively. The early vs. modern 3-year RFS was 33% and 64% (p=0.039), respectively, while the 3-year OS was 55% and 90% (p=0.034). Regional nodal recurrence more common among the patients who received VB only (p=0.048).
Conclusion
Modern era treatment was associated with improved RFS and OS in patients with stage III USC. Regional nodal recurrences were significantly reduced in patients who received EBRT.

Keyword

Endometrium; Carcinoma; Brachytherapy; Radiotherapy