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TNM and Stage Groupings > Vulva
Vulva
Primary Tumor (T)
| T Category |
Stage Category Definitions |
| TX |
Primary tumor cannot be assessed |
| T0 |
No evidence of primary tumor |
| Tis |
Carcinoma in situ (preinvasive carcinoma) |
| T1a |
Lesions ≦ 2 cm in size, confined to the vulva or perineum and with stromal
invasion ≦ 1.0 mm** |
| T1b |
Lesions >2 cm in size or any size with stromal invasion > 1.0 mm, confined to
the vulva or perineum |
| T2*** |
Tumor of any size with extension to adjacent perineal structures
(Lower/distal 1/3 urethra, lower/distal 1/3 vagina, anal involvement) |
| T3**** |
Tumor of any size with extension to any of the following: upper/proximal 2/3 of
urethra, upper/proximal 2/3 vagina, bladder mucosa, rectal mucosa, or fixed
to pelvic bone. |
* FIGO staging no longer includes Stage 0 (Tis).
*** FIGO uses the classification T2/T3. This is defined as T2 in TNM.
**** FIGO uses the classification T4. This is defined as T3 in TNM.
** The depth of invasion is defined as the measurement of the tumor from the
epithelial-stromal junction of the adjacent most superficial dermal papilla to the
deepest point of invasion.
Regional Lymph Nodes (N)
| N Category |
Stage Category Definitions |
| NX |
Regional lymph nodes cannot be assessed |
| N0 |
No regional lymph node metastasis |
| N1 |
One or two regional lymph node with the following features |
| N1a |
One or two lymph node metastasis each 5 mm or less |
| N1b |
One lymph node metastases 5 mm or greater |
| N2 |
Regional lymph node metastasis with the following features: |
| N2a |
Three or more lymph node metastases each less than 5 mm |
| N2b |
Two or more lymph node metastases 5 mm or greater |
| N2c |
Lymph node metastasis with extracapsular spread |
| N3 |
Fixed or ulcerated regional lymph node metastasis |
An effort should be made to describe the site and laterality of lymph node
metastases.
Distant Metastasis (M)
| M Category |
Stage Category Definitions |
| M1 |
Distant metastasis (including pelvic lymph node metastasis) |
No distant metastasis (no pathologic M0; use clinical M to complete stage group)
Anatomic Stage/Prognostic Groups
| Stage |
T |
N |
M |
| 0* |
Tis |
N0 |
M0 |
| I |
T1 |
N0 |
M0 |
| IA |
T1a |
N0 |
M0 |
| IB |
T1b |
N0 |
M0 |
| II |
T2 |
N0 |
M0 |
| IIIA |
T1, T2 |
N1a, N1b |
M0 |
| IIIB |
T1, T2 |
N2a, N2b |
M0 |
| IIIC |
T1, T2 |
N2c |
M0 |
| IVA |
T1, T2 |
N3 |
M0 |
| IVA |
T3 |
Any N |
M0 |
| IVB |
Any T |
Any N |
M1 |
*FIGO no longer includes Stage 0 (Tis).
