The Féderation Internationale de Gynécologie et d'Obstétrique (FIGO) and the American Joint Committee on Cancer (AJCC) have designated staging to define endometrial cancer; the FIGO system is most commonly used.[1,2]
Carcinosarcomas should be staged as carcinoma. FIGO stages are further subdivided by the histologic grade of the tumor, for example, stage IC G2.
Table 1. Carcinoma of the Endometriuma
a Adapted from FIGO Committee on Gynecologic Oncology.
b Either G1, G2, or G3 (G = grade).
c Endocervical glandular involvement only should be considered as stage I and no longer as stage II.
d Positive cytology has to be reported separately without changing the stage.
Tumor confined to the corpus uteri.
No or less than half myometrial invasion.
Invasion equal to or more than half of the myometrium.
Tumor invades cervical stroma but does not extend beyond the uterus.c
Local and/or regional spread of the tumor.
Tumor invades the serosa of the corpus uteri and/or adnexae.d
Vaginal and/or parametrial involvement.d
Metastases to pelvic and/or para-aortic lymph nodes.d
Positive pelvic nodes.
Positive para-aortic lymph nodes with or without positive pelvic lymph nodes.