Risk factors for venous thromboembolism in endometrial cancer

  • S. Pin University of Alberta, Cross Cancer Institute
  • J. Mateshaytis University of Alberta
  • S. Ghosh Cross Cancer Institute
  • E. Batuyong Tom Baker Cancer Centre, University of Calgary
  • J. C. Easaw Cross Cancer Institute
Keywords: Venous thromboembolism, VTE, pulmonary embolism, PE, DVT, endometrial cancer, risk factors, postoperative, surgery


Background Venous thromboembolism (vte) in malignancy is associated with poor outcomes. We conducted a retrospective review of vte in patients with endometrial cancer to characterize the vte incidence, identify factors that contribute to vte risk, and compare survival outcomes in patients with and without vte.

Methods A retrospective chart review identified 422 eligible patients who underwent surgery for endometrial cancer (1 January 2014 to 31 July 2016). The primary outcome was vte. Binary logistic regression identified risk factors for vte; significant risk factors were included in a multivariate analysis. Kaplan–Meier estimates are reported, and log rank tests were used to compare the Kaplan–Meier curves. Risk-adjusted estimates for overall survival based on vte were determined using a multivariate Cox proportional hazards model.

Results The incidence of vte was 6.16% overall and 0.7% within 60 days postoperatively. Non-endometrioid his­tology, stages 3 and 4 disease, laparotomy, and age (p < 0.1) were identified as factors associated with vte and were included in a multivariate analysis. The overall death rate in patients with vte was 42% (9% without vte): hazard ratio, 5.63; 95% confidence interval, 2.86 to 11.08; p < 0.0001. Adjusting for age, stage of disease, and histology, risk of death remained significant for patients with a vte: hazard ratio, 2.20; 95% confidence interval, 1.09 to 4.42; p = 0.0271.

Conclusions A method to identify patients with endometrial cancer who are at high risk for vte is important, given the implications of vte for patient outcomes and the frequency of endometrial cancer diagnoses. Factors identified in our study might assist in the recognition of such patients.

Author Biographies

S. Pin, University of Alberta, Cross Cancer Institute

Obstetrics and Gynecology

J. Mateshaytis, University of Alberta

Department of Obstetrics and Gynecology

How to Cite
Pin, S., Mateshaytis, J., Ghosh, S., Batuyong, E., & Easaw, J. C. (2020). Risk factors for venous thromboembolism in endometrial cancer. Current Oncology, 27(4). https://doi.org/10.3747/co.27.5981
Surgical Oncology