Stage

I

The carcinoma is strictly confined to the cervix (extension to the corpus would be disregarded).

IA

Invasive carcinoma, which can be diagnosed only by microscopy with deepest invasion ≤ 5 mm and largest extension ≥ 7 mm.

IA1

Measured stromal invasion of ≤ 3.0 mm in depth and extension of ≤ 7.0 mm.

IA2

Measured stromal invasion of > 3.0 mm and not > 5.0 mm with an extension of not > 7.0 mm.

IB

Clinically visible lesions limited to the cervix uteri or preclinical cancers greater than stage IA.

IB1

Clinically visible lesion ≤ 4.0 cm in greatest dimension.

IB2

Clinically visible lesion > 4.0 cm in greatest dimension.

II

Cervical carcinoma invades beyond the uterus but not to the pelvic wall or to the lower third of the vagina.

IIA

Without parametrial invasion.

IIA1

Clinically visible lesion ≤ 4.0 cm in greatest dimension.

IIA2

Clinically visible lesion > 4.0 cm in greatest dimension.

IIB

With obvious parametrial invasion.

III

The tumour extends to the pelvic wall and/or involves lower third of the vagina and/or causes hydronephrosis or nonfunctioning kidney.

IIIA

Tumour involves lower third of the vagina with no extension to the pelvic wall.

IIIB

Extension to the pelvic wall and/or hydronephrosis or nonfunctioning kidney.

IV

The carcinoma has extended beyond the true pelvis or has involved (biopsy proven) the mucosa of the bladder or rectum. A bullous oedema, as such, does not permit a case to be allotted to stage IV.

IVA

Spread of the growth to adjacent organs.

IVB

Spread to distant organs.