2018 FIGO staging			Descriptions
Ia			Tumour contained to the corpus uteri
	IAa		No or less than half myometrial invasion
	IBa		Invasion equal to or more than half of the myometrium
IIa			Tumour invades the cervical stroma but does not extend beyond the uterusb
IIIa			Local and/or regional spread of tumour
	IIIAa		Tumour invades the serosa of the corpus uteri and/or adnexaec
	IIIBa		Vaginal involvement and/or parametrial involvementc
	IIICa		Metastases to the pelvis and/or para‐aortic lymph nodesc
		IIIC1a	Positive pelvic nodes
		IIIC2a	Positive para‐aortic lymph nodes with or without positive pelvic lymph nodes
IVa			Tumour invades bladder and/or bowel mucosa and/or distant metastases
	IVAa		Tumour invasion of bladder and/or bowel mucosa
	IVBa		Distant metastases, including intra‐abdominal metastases and/or inguinal lymph nodes
aEither grade 1, grade 2, or grade 3 bEndocervical glandular involvement only should be considered as Stage I and no longer as Stage II cPositive cytology has to be reported separately without changing the stage