Assessment of different pre and intra-operative strategies to predict the actual ESMO risk group and to establish the appropriate indication of lymphadenectomy in endometrial cancer.

ABSTRACT

PURPOSE OF INVESTIGATION The objective of this study was to evaluate the best pre- and intra-operative strategy to determine the European Society for Medical Oncology (ESMO) risk group. MATERIALS AND METHODS: Retrospective study on patients supported for endometrial cancer between 2006 and 2011. Twelve algorithms, integrating endometrial biopsy for histological type and tumour grade, and ultrasound and/or magnetic resonance imaging (MRI)±intra-operative examination for determination of myometrial invasion, were built. The diagnostic values of each algorithm to predict high- and low-risk group were calculated. RESULTS: During the study period, 159 patients were operated for endometrial cancer. On these 159 patients, 103 met the inclusion criteria. For the prediction of high-risk group, the best algorithm was endometrial biopsy and ultrasound, combined with MRI in case of myometrial invasion <50%±intra-operative examination in case of myometrial invasion <50% on MRI. For the prediction of low-risk group, the 2 best algorithms were endometrial biopsy and ultrasound or MRI, combined with MRI or ultrasound in case of myometrial invasion <50% and intra-operative examination in case of discrepancy between both exams. There was no internal or external validation. CONCLUSION: Our study suggests that the best strategy to predict actual ESMO risk group is endometrial biopsy and transvaginal ultrasound±MRI and intra-operative examination in case of myometrial invasion <50% on ultrasound.