Carcinoma of the Uterine Cervix: FIGO Nomenclature (Montreal, 1994)
Stage 0: Carcinoma in situ, cervical
intraepithelial neoplasia gradeI III.
Stage I: The carcinoma is strictly confined to the cervix (extension to the corpus would be disregarded).
Stage IA: Invasive carcinoma that can be diagnosed only by microscopy. All macroscopically visible lesions even with superficial invasion are allotted to stage IB carcinomas. Invasion is limited to a measured stromal invasion with a maximal depth of 5.0 mm and a horizontal extension no wider than 7.0 mm. (Depth of invasion should be no greater than 5.0 mm taken from the base of the epithelium of the original tissuesuperficial or glandular. The involvement of vascular spaces venous or lymphatic should not change the stage designation.)
Stage IA1: Measured stromal invasion no greater than 3.0 mm in depth and extension no wider than 7.0 mm.
Stage IA2: Measured stromal invasion greater than 3.0 mm and no greater than 5.0 mm with an extension no wider than 7.0 mm.
Stage IB: Clinically visible lesions limited to the cervix uteri or preclinical cancers greater than stage IA.
Stage IB1: Clinically visible lesions no greater than 4.0 cm.
Stage IB2: Clinically visible lesions greater than 4.0 cm.
Stage II: Cervical carcinoma invades beyond the uterus, but not to the
pelvic wall or to the lower third of the vagina.