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International Federation of Gynaecology and Obstetrics (FIGO) staging for carcinoma of the cervix r

Stage Description
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 pre-clinical 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
Stage 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 cm in greatest dimension
IIB With obvious parametrial invasion
Stage III The tumor extends to the pelvic wall and/or involves lower third of the vagina and/or causes hydronephrosis or non-functioning kidney**
IIIA Tumor involves lower third of the vagina, with no extension to the pelvic wall
IIIB Extension to the pelvic wall and/or hydronephrosis or non-functioning kidney
Stage IV The carcinoma has extended beyond the true pelvis or has involved (biopsy proven) the mucosa of the bladder or rectum. A bullous edema, 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

* 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 of not > 7.0 mm. Depth of invasion should not be > 5.0 mm taken from the base of the epithelium of the original tissue superficial or glandular. The depth of invasion should always be reported in mm, even in those cases with "early (minimal) stromal invasion" (~ 1.0 mm). The involvement of vascular/lymphatic spaces should not change the stage allotment.

** On rectal examination, there is no cancer-free space between the tumor and the pelvic wall. All cases with hydronephrosis or non-functioning kidney are included, unless they are known to be due to another cause.

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20 Jul 2019