The number of metastatic sites for stage IIIA endometrial carcinoma, endometrioid cell type, is a strong negative prognostic factor

Abstract

The aim of this study was to look at the impact of the number of sites with tumour involvement on outcome for patients with stage IIIA endometrioid-type endometrial carcinoma.

Patients and methods: 141 patients stage IIIA were included. A central histopathological review was performed. Patients staged solely on the presence of a positive peritoneal washing were excluded. Follow-up ranged from 2 to 217 months with a median of 43 months. Endpoints of the study were locoregional recurrence rates, distant metastasis-free survival (DMFS), disease-free survival (DFS) and disease-specific survival (DSS).

Results: In multivariate analyses the number of involved sites showed to be the only independent significant variable for DMFS, DFS, and DSS with a Hazard Ratio of 2.1, 2.2, and 2.2, respectively. The DSS was significantly related to the number of involved sites, with a 5-year DSS of 70.4% for one site, 42.8% for two sites, and 43.9% for three sites, respectively (p=0.001).

Conclusion: The number of involved sites outside the corpus uterine for stage IIIA seems to be a strong negative prognostic factor for stage IIIA endometrial carcinoma.