Cervical Cancer Staging 

Updated: Nov 13, 2015
  • Author: Cecelia H Boardman, MD; Chief Editor: from Memorial Sloan-Kettering - Yukio Sonoda, MD  more...
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TNM and FIGO Classifications for Cervical Cancer

The American Joint Committee on Cancer (AJCC) TNM classification and the International Federation of Gynecology and Obstetrics (FIGO) staging system for cervical cancer are provided below. [1, 2, 3]

Table. TNM and FIGO Classifications for Cervical Cancer (Open Table in a new window)

Primary tumor (T)

TNM

FIGO

Surgical-Pathologic Findings

Categories

Stages

 

TX

 

Primary tumor cannot be assessed

T0

 

No evidence of primary tumor

Tis

 

Carcinoma in situ (preinvasive carcinoma)

T1

I

Cervical carcinoma confined to the cervix (disregard extension to the corpus)

T1a

IA

Invasive carcinoma diagnosed only by microscopy; stromal invasion with a maximum depth of 5.0 mm measured from the base of the epithelium and a horizontal spread of 7.0 mm or less; vascular space involvement, venous or lymphatic, does not affect classification

T1a1

IA1

Measured stromal invasion ≤ 3.0 mm in depth and ≤ 7.0 mm in horizontal spread

T1a2

IA2

Measured stromal invasion > 3.0 mm and ≤ 5.0 mm with a horizontal spread ≤ 7.0 mm

T1b

IB

Clinically visible lesion confined to the cervix or microscopic lesion greater than T1a/IA2

T1b1

IB1

Clinically visible lesion ≤ 4.0 cm in greatest dimension

T1b2

IB2

Clinically visible lesion > 4.0 cm in greatest dimension

T2

II

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

T2a

IIA

Tumor without parametrial invasion

T2a1

IIA1

Clinically visible lesion ≤ 4.0 cm in greatest dimension

T2a2

IIA2

Clinically visible lesion > 4.0 cm in greatest dimension

T2b

IIB

Tumor with parametrial invasion

T3

III

Tumor extends to pelvic wall and/or involves lower third of vagina and/or causes hydronephrosis or nonfunctional kidney

T3a

IIIA

Tumor involves lower third of vagina, no extension to pelvic wall

T3b

IIIB

Tumor extends to pelvic wall and/or causes hydronephrosis or nonfunctional kidney

T4

IV

Tumor invades mucosa of bladder or rectum and/or extends beyond true pelvis (bullous edema is not sufficient to classify a tumor as T4)

T4a

IVA

Tumor invades mucosa of bladder or rectum (bullous edema is not sufficient to classify a tumor as T4)

T4b

IVB

Tumor extends beyond true pelvis

Regional lymph nodes (N)

NX

Regional lymph nodes cannot be assessed

N0

No regional lymph node metastasis

N1

Regional lymph node metastasis

Distant metastasis (M)

M0

No distant metastasis

M1

Distant metastasis (including peritoneal spread; involvement of supraclavicular, mediastinal, or para-aortic lymph nodes; and lung, liver, or bone)