Staging of endometrial cancer. An illustrated guide to understand and apply the 2023 FIGO system

Abstract

The FIGO (International Federation of Gynaecology and Obstetrics) classification for the staging of endometrial cancer was updated in 2023. This new classification, based on clinicopathological data, represents a challenge for the radiologist, who needs to know histological data before assigning a prognostic stage to the tumour. This article provides the histopathological information necessary for a better understanding of this FIGO 2023 classification. It also presents explanatory graphs and a comparative study with the previous FIGO classification, highlighting the new features and possible errors that can be made, all with the aim of facilitating the radiologist's work.