Table 1.

Revised (2009) International Federation of Gynecology and Obstetrics Staging System for Endometrial Cancer.

Stage	Finding(s)
I*	Tumor confined to the corpus uteri
IA*	No invasion or invasion of less than half of the myometrium
IB*	Invasion of half or more than half of the myometrium
II*	Tumor invading the cervical stroma but not extending beyond the uterus†
III*	Local and/or regional spread of the tumor
IIIA*	Tumor invading the serosa of the corpus uteri and/or adnexa‡
IIIB*	Vaginal and/or parametrial involvement‡
IIIC*	Metastases to pelvic and/or para-aortic lymph nodes‡
IIIC1*	Positive pelvic lymph nodes
IIIC2*	Positive para-aortic lymph nodes with or without positive pelvic lymph nodes
IV*	Tumor invading the bladder and/or bowel mucosa, with or with-out distant metastases
IVA*	Tumor invading the bladder and/or bowel mucosa
IVB*	Distant metastases, including intra-abdominal metastases and/ or inguinal lymph nodes

^* G1, G2, or G3.

^† Endocervical glandular involvement only should now be considered indicative of stage I rather than stage II.

^‡Positive cytology should be reported separately and does not alter the stage.