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TNM and Stage Groupings > Soft Tissue Sarcoma
Soft Tissue Sarcoma
Primary Tumor (T)
| T Category |
Stage Category Definitions |
| TX |
Primary tumor cannot be assessed |
| T0 |
No evidence of primary tumor |
| T1 |
Tumor 5 cm or less in greatest dimension |
| T1a |
Superficial tumor |
| T1b |
Deep tumor |
| T2 |
Tumor more than 5 cm in greatest dimension |
| T2a |
Superficial tumor |
| T2b |
Deep tumor |
Note: Superficial tumor is located exclusively above the superficial fascia
without invasion of the fascia; deep tumor is located either exclusively beneath
the superficial fascia, superficial to the fascia with invasion of or through the
fascia, or both superficial yet beneath the fascia.
Regional Lymph Nodes (N)
| N Category |
Stage Category Definitions |
| NX |
Regional lymph nodes cannot be assessed |
| N0 |
No regional lymph node metastasis |
| N1 |
Regional lymph node metastasis |
*Note: Presence of positive nodes (N1) in M0 tumors is considered Stage III
Distant Metastasis (M)
| M Category |
Stage Category Definitions |
| M1 |
Distant metastasis |
No distant metastasis (no pathologic M0; use clinical M to complete stage group)
Anatomic Stage/Prognostic Groups
| Stage |
T |
N |
M |
Grade |
| IA |
T1a |
N0 |
M0 |
G1, GX |
| IA |
T1b |
N0 |
M0 |
G1, GX |
| IB |
T2a |
N0 |
M0 |
G1, GX |
| IB |
T2b |
N0 |
M0 |
G1, GX |
| IIA |
T1a |
N0 |
M0 |
G2, G3 |
| IIA |
T1b |
N0 |
M0 |
G2, G3 |
| IIB |
T2a |
N0 |
M0 |
G2 |
| IIB |
T2b |
N0 |
M0 |
G2 |
| III |
T2b |
N0 |
M0 |
G3 |
| III |
Any T |
N1 |
M0 |
Any G |
| IV |
Any T |
Any N |
M1 |
Any G |
