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TNM and Stage Groupings > Ocular Adnexal Lymphoma
Ocular Adnexal Lymphoma
Primary Tumor (T)
| T Category |
Stage Category Definitions |
| TX |
Lymphoma extent not specified |
| T0 |
No evidence of lymphoma |
| T1 |
Lymphoma involving the conjunctiva alone without orbital involvement |
| T1a |
Bulbar conjunctiva only |
| T1b |
Palpebral conjunctiva +/- fornix +/- caruncle |
| T1c |
Extensive conjunctival involvement |
| T2 |
Lymphoma with orbital involvement +/- any conjunctival involvement |
| T2a |
Anterior orbital involvement (+/- conjunctival involvement) |
| T2b |
Anterior orbital involvement (+/- conjunctival involvement + lacrimal
involvement) |
| T2c |
Posterior orbital involvement (+/- conjunctival involvement +/- anterior
involvement and +/- any extraocular muscle involvement) |
| T2d |
Nasolacrimal drainage system involvement (+/- conjunctival involvement but
not including nasopharynx) |
| T3 |
Lymphoma with pre-septal eyelid involvement (defined above) +/- orbital
involvement +/- any conjunctival involvement |
| T4 |
Orbital adnexal lymphoma extending beyond orbit to adjacent structures such
as bone and brain |
| T4a |
Involvement of nasopharynx |
| T4b |
Osseous involvement (including periosteum) |
| T4c |
Involvement of maxillofacial, ethmoidal and/or frontal sinuses |
| T4d |
Intracranial spread |
Regional Lymph Nodes (N)
| N Category |
Stage Category Definitions |
| NX |
Regional lymph nodes cannot be assessed |
| N0 |
No evidence of lymph node involvement |
| N1 |
Involvement of ipsilateral regional lymph nodes* |
| N2 |
Involvement of contra lateral or bilateral regional lymph nodes * |
| N3 |
Involvement of peripheral lymph nodes not draining ocular adnexal region |
| N4 |
Involvement of central lymph nodes |
* The regional lymph nodes included preauricular (parotid), submandibular, and
cervical
Distant Metastasis (M)
| M Category |
Stage Category Definitions |
| M1a |
Noncontiguous involvement of tissues or organs external to the ocular adnexa (e.g.,
parotid glands, submandibular gland, lung, liver, spleen, kidney, breast, etc.) |
| M1b |
Lymphomatous involvement of the bone marrow |
| M1c |
Both M1a and M1b involvement |
No evidence of involvement of other extranodal sites (no pathologic M0; use
clinical M to complete stage group)
Anatomic Stage/Prognostic Groups
| Stage |
T |
N |
M |
|
|
|
|
No stage grouping is presently recommended.
