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TNM and Stage Groupings > Sarcoma of the Orbit
Sarcoma of the Orbit
Primary Tumor (T)
| T Category |
Stage Category Definitions |
| TX |
Primary tumor cannot be assessed |
| T0 |
No evidence of primary tumor |
| T1 |
Tumor 15 mm or less in greatest dimension |
| T2 |
Tumor more than 15 mm in greatest dimension without invasion of globe or
bony wall |
| T3 |
Tumor of any size with invasion of orbital tissues and/or bony walls |
| T4 |
Tumor invasion of globe or periorbital structure, such as eyelids, temporal
fossa, nasal cavity and paranasal sinuses, and/or central nervous system |
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 |
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 |
|
|
|
|
No stage grouping is presently recommended.
