Pathologic T

This input is used for staging

Notes

**Note 1:** True invasion of the choroid is defined as one or more solid nests of tumor cells that fills or replaces the choroid and has pushing borders. This is distinguished from artifactual invasion, or groups of tumor cells in the open spaces beween intraocular structures, extraocular tissues, and/or subarachnoid space. **Note 2:** Focal choroidal invasion is a solid nest of tumor measuring less than 3 millimeter (mm) in maximum diameter. Massive choroidal invasion is a solid tumor nest 3 mm or more in maximum diameter.

NAACCR Item

NAACCR #880
Pathologic T Pathologic T Display Description Registrar Notes
pX pTX Primary tumor cannot be assessed No enucleation performed or unknown if enucleation performed

Pathologic classification criteria met, evaluation done:
Physician unable to assess T
Surgical resection of primary tumor, extension not stated
Physician assigns pTX, no other information available to determine T
p0 pT0 No evidence of primary tumor
p1 pT1 Tumor confined to eye with no optic nerve or choroidal invasion Tumor cells in the vitreous body WITHOUT optic nerve or choroidal invasion

Tumor(s) confined to and WITHOUT optic nerve or choroidal invasion:
Eye, NOS
Retina
Subretinal space

Stated as T1
p2 pT2 Tumor with minimal optic nerve and/or choroidal invasion Note: T2 has subcategories of T2a and T2b. Assign T2 only when there is no information available to assign one of the subcategories

Tumor with minimal optic nerve and/or choroidal invasion, NOS

Stated as T2
p2A pT2a Tumor superficially invades optic nerve head but does not extend past lamina cribosa OR exhibits focal choroidal invasion Tumor invades optic nerve up to, but not through, level of lamina cribrosa WITHOUT invasion of choroid

Tumor invades choroid focally WITHOUT invasion of optic nerve

Stated as T2a
p2B pT2b Tumor superficially invades optic nerve head but does not extend past lamina cribosa AND exhibits focal choroidal invasion Tumor invades optic nerve up to, but not through, level of lamina cribosa WITH focal invasion of the choroid

Stated as T2b
p3 pT3 Tumor with significant optic nerve and/or choiroidal invasion Note: T3 has subcategories of T3a and T3b. Assign T3 only when there is no information available to assign one of the subcategories

Tumor with significant optic nerve and/or choroidal invasion, NOS

Stated as T3 [NOS]
p3A pT3a Tumor invades optic nerve past lamina cribosa but not to surgical resection line OR

Tumor exhibits massive choroidal invasion
Tumor invades optic nerve through the level of lamina cribosa but not to line of resection WITHOUT massive invasion of choroid

Tumor massively invades choroid WITHOUT invasion of optic nerve through level of lamina cribrosa

Tumor with significant optic nerve and/or choroidal invasion

Stated as T3a
p3B pT3b Tumor invades optic nerve past lamina cribrosa but not to surgical resection line and exhibits massive choroidal invasion Tumor invades optic nerve through level of lamina cribrosa but not to line of resection WITH massive invasion of choroid

Stated as T3b
p4 pT4 Tumor invades optic nerve to resection line OR

Exhibits extraocular extension elsewhere
Note: T4 has subcategories of T4a and T4b. Assign T4 only when there is no information available to assign one of the subcategories

Extraocular extension WITHOUT invasion of optic nerve to resection line including:
Invasion of orbit through sclera
Extension to:
Anterior or posteriorly into orbit
Apex of orbit
Brain
Brain beyond chiams
Subarachnoidal space of optic nerve

Stated as T4 [NOS]
p4A pT4a Tumor invades optic nerve to resection line
NO extraocular extension identified
Invasion of optic nerve to resection line WITHOUT extraocular extension

Stated as T4a
p4B pT4b Tumor invades optic nerve to resection line
Extraocular extension identified
Invasion of optic nerve to resection line WITH extraocular extension including:
Invasion of orbit through sclera
Extension to:
Anterior or posteriorly into orbit
Apex of orbit
Brain
Brain beyond chiams
Subarachnoidal space of optic nerve

Staged as T4b
88 88 Not applicable Primary site/histology not TNM defined
Death certificate only (DCO) case
<BLANK> BLANK See Registrar Notes Pathologic classification criteria not met
Pathologic classification criteria met, evaluation done:
Results not documented in patient record
No surgical resection of known primary tumor (not T0)
Resection insufficient for site-specific pathologic assessment
No surgical resection of primary tumor and there isn’t a positive biopsy of a structure in the highest T category and highest N category
Evidence of metastatic disease (pM1), no other workup
Only Pathologic Stage Group documented (no T, N, or M information available)