Patterns of recurrence and outcomes in surgically treated women with endometrial cancer according to ESMO-ESGO-ESTRO Consensus Conference risk groups: Results from the FRANCOGYN study Group☆
Introduction
Endometrial cancer (EC) has been reported to be one of the most common gynaecological tumours in developed countries representing the fifth most common cancer overall and the 14th cancer in terms of mortality (76,000 deaths per year worldwide) [1], [2]. Most ECs (75%) are diagnosed at an early stage (International Federation of Obstetrics & Gynaecology (FIGO) stages I or II) with a 5-year overall survival (OS) ranging from 74% to 91% [1,2]. In comparison, for advanced stages (FIGO stages III and IV), the 5-year OS is 57–66% and 20–26%, respectively [3].
Although EC is characterized by a good prognosis, a great heterogeneity has been reported by several authors, especially for early-stage ECs, exposing women to recurrent disease [3], [4], [5]. EC site-specific recurrence patterns are influenced by classic prognostic factors such as histological type and grade, depth of myometrial invasion, lymphovascular space involvement (LVSI), and nodal status [3], [6], [7], [8], [9]. It is now well established that recurrences after primary surgical treatment are mostly located in the true pelvis with events generally occurring in the regional pelvic lymph nodes or in the vaginal vault [3], [6], [7], [8]. However, other locations including distant metastases or peritoneal carcinomatosis can also be observed underlining the prognostic heterogeneity of the disease [3], [6], [7], [10]. In addition, EC recurrences vary considerably over time and are influenced by adjuvant therapeutic modalities. Nevertheless, despite this recognized variability, more than 70% of recurrences occur within the first 2–3 years after treatment [11], [12], [13].
To take this heterogeneity into account, the European Society for Medical Oncology (ESMO) with the support of the European Society for Radiotherapy & Oncology (ESTRO) and the European Society of Gynaecological Oncology (ESGO) recently proposed a multidisciplinary evidence-based classification for clinical practice [3]. However, in light of the evolving classification of EC, limited information is available for each EC subgroup with regard to patterns of disease recurrence and prognosis. This is of major importance as such information may impact indications for adjuvant therapies and modalities of follow-up for each subgroup. We thus conducted an analysis of EC patterns of recurrence based on a large French multicentre database according to ESMO-ESGO-ESTRO conference consensus classification [3].
Section snippets
Study population
Data of women with histologically proven EC who received primary surgical treatment between January 2001 and December 2012 were retrospectively abstracted from seven institutions with prospectively maintained EC databases in France (Tenon University Hospital, Reims University Hospital, Dijon Cancer Center, Rennes University Hospital, Lille University Hospital, Tours University Hospital, and Creteil University Hospital) and from the Senti-Endo trial. All the women had given written consent to
Characteristics of the study population
During the study period, women with EC were documented as having received primary surgical treatment according to the following distribution: Tenon University Hospital (118/829; 14%), Tours University Hospital (178/829; 21%), Dijon Cancer Centre (77/829; 9%), Creteil Hospital (107/829; 13%), Reims University Hospital (101/829; 12%), Rennes University Hospital (57/829; 7%), Jeanne de Flandre University Hospital (92/829; 11%), and Senti-Endo trial (99/829; 12%).
The median age of the women was 66.0
Discussion
In this large multicentre study, we report specific site and time patterns of first recurrence according both to risk group as defined by the ESMO/ESGO/ESTRO Consensus Conference classification and the histological type. We underline the poor prognosis for women at high and high-intermediate risk as well as for women with histological type 2 ECs for whom a shorter 5-year OS and RFS was observed. It also appears that time to first recurrence, site of first recurrence and the hazard rates for
Conclusion
To the best of our knowledge, this study represents the largest series reporting outcomes and patterns of recurrence of women with EC according to ESMO-ESMO-ESTRO risk groups and pathological subtypes. Our results show that recurrences differ widely in terms of site and timing depending on the risk subgroup, reinforcing the need for appropriate monitoring schemes for which current guidelines are somewhat blurred. In addition, these results could be taken into account to design future
Conflict of interest statement
No authors have conflict of interests.
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2023, Gynecologic OncologyCitation Excerpt :Moreover, older age, higher stage, positive peritoneal washings and having received adjuvant treatment, although not surgical technique or lymph nodes dissection, were found to be independent predictive factors and associated with a higher risk for recurrence. Endometrioid ECs, especially low grade, display a pattern of recurrence more often localized to vagina than what is the case for non-endometrioid ECs [24–26]. One may consider our finding of 27.2% with only vaginal recurrences low in comparison to others where Gayar et al. [27] found 38.1% isolated vaginal recurrence in endometrioid EC but included only FIGO stage I and II.
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No source of financial support for the research.