Overall and progression-free survival in endometrial carcinoma: A single-center retrospective study of patients treated between 2000-2018

Abstract

BACKGROUND: Investigating survival in endometrial cancer (EC) is crucial to determine the effectiveness of overall management as it will reflect on the level of care provided among this population. OBJECTIVE: The study was conducted to analyze the overall survival (OS) and progression-free survival (PFS) in treated endometrial carcinoma and to determine the associated predictors. DESIGN: Retrospective SETTING: Department of obstetrics and gynecology in university tertiary hospital PATIENTS AND METHODS: Baseline demographic and clinical data, tumor characteristics and perioperative and outcome data were collected from consecutive patients treated for EC between 2000 and 2018. Kaplan-Meier method and multivariate Cox regression were used to analyze factors and predictors of OS and PFS. MAIN OUTCOME MEASURES: OS, PFS and prognostic factors SAMPLE SIZE: 200 RESULT: Endometrioid type was the most common type accounting for 78.5% of the cases, followed by papillary serous carcinoma (18.5%). At diagnosis, 21.5% were stage III, and 12.0% were stage IV. Invasiveness features showed involvement of the myometrium (96.5%), lymph vessels (36.5%), cervix stroma (18.5%), lower segment (22.0%), and parametrium (7.0%). The majority of patients had open surgery (80.0%), while 11.5% and 7.0% had laparoscopy and robotic surgery, respectively. Staging and debulking were performed in 89.0% of patients, and 12.5% of patients had residual disease of more than 2 cm. The mean OS and PFS were 104.4 (95% CI=91.8–117.0) months and 96.8 (95% CI=83.9–109.7) months, respectively. The 5-year OS and PFS were 62.5% and 46.9%, respectively. The majority of the factors we assessed were significantly associated with OS or PFS. However, reduced OS was independently associated age ≥60 years (hazard ratio [HR]=1.99, P=.010), papillary serous carcinoma (HR=2.35, P=.021), and residual disease (HR=3.84, P=.007); whereas PFS was predicted by age ≥60 years (HR=1.87, P=.014) and residual disease (HR=3.22, P=.040). CONCLUSION: There is a need for a national strategy to tackle the growing burden of EC, by identifying the locally-specific incidence, delayed diagnosis and survival outcome. LIMITATIONS: This was a single-center study conducted at a tertiary center, which may question the generalizability of the findings, as the sample may be biased by overrepresentation with patients who were diagnosed at an advanced stage.