. Author manuscript; available in PMC: 2014 Sep 15.

Published in final edited form as: Cochrane Database Syst Rev. 2011 Oct 5;(10):CD003175. doi: 10.1002/14651858.CD003175.pub2

Table 1.

Comparison of unified UICC staging systems for endometrial cancer: TNM sixth edition (to 2009) and seventh edition (from 2010 onwards)

Anatomic description of spread	Stage in TNM 6	Stage in TNM 7
Limited to endometrium	T1	T1
No invasion of myometrium	T1a	T1a
Invasion of < 1/2 of myometrium	T1b	T1a
Invasion of 1/2 or more of myometrium	T1c	T1b
Invades cervix	T2
Invades only glandular epithelium of endocervix	T2a	Ignore for staging purposes
Invades stroma of cervix	T2b	T2
Endometrial cancer extends outside of the uterus but is confined to the true pelvis	T3	T3
Tumour invades serosa and/or adnexa and/or positive peritoneal cytology	T3a	T3a
Vaginal metastases	T3b	T3b
Spread to lymph nodes	T3c	T3c
Spread to bladder or bowel mucosa	T4a	T4a
Distant extrapelvic metastases	T4bM1	T4bM1