# FIGO 2023 staging of endometrial cancer

Source: https://onco.cc/terms/figo-2023-endometrial/  
OnCo record `figo-2023-endometrial` (Term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Since 2023 the stage of womb cancer includes its histological type and, where tested, its molecular class, so two tumours of the same size can now carry different stages.

## Summary

FIGO's 2023 revision (Berek and colleagues, International Journal of Gynecology and Obstetrics 2023) replaced the 2009 staging. Stage I is split into IA1 to IA3, IB and IC by histological type, depth of invasion into the muscle and lymphovascular space invasion, with aggressive types (serous, high-grade endometrioid, clear cell, carcinosarcoma and others) moved to IC or IIC; stage II separates cervical stromal invasion, substantial lymphovascular invasion and aggressive types with any muscle invasion; stage III and IV substages separate adnexal from serosal spread, pelvic from para-aortic nodes, and pelvic from extrapelvic peritoneal and distant spread. Molecular classification (POLEmut, MMRd, NSMP, p53abn) is encouraged for all; when known it is added to the stage (for example IAmPOLEmut or IICmp53abn), and in stages I and II p53abn or POLEmut moves the stage up or down.

## Fields

- Kind: Term
- Last checked: 2026-11-04
- Also known as: FIGO 2023; FIGO 2023 endometrial staging; FIGO endometrial staging; IAmPOLEmut; IICmp53abn

## Sources

- Berek et al., FIGO staging of endometrial cancer: 2023 (Int J Gynaecol Obstet 2023): https://doi.org/10.1002/ijgo.14923

## Connected records

- terms: [Disease-specific staging and risk systems (FIGO, Ann Arbor, IPI, R-ISS, ELN, IMDC)](https://onco.cc/terms/staging-systems/), [Endometrial cancer molecular classes (POLEmut, MMRd, p53abn, NSMP)](https://onco.cc/terms/endometrial-molecular-classes/), [TNM staging](https://onco.cc/terms/tnm-staging/)
- cancers: [Endometrial cancer](https://onco.cc/cancers/endometrial/)

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