Pathologic T

This input is used for staging


**Note 1:** Assign 88 for in situ cases (behavior code /2). TNM does not include an in situ category for orbit sarcoma tumors. **Note 2:** The orbital tissues are the support systems of the globe, confined to the space within the surrounding bony structure. The orbital tissues include * Fat, striated and smooth muscle, and fibroconnective, vascular, lymphoid, peripheral nerve, and optic nerve tissue **Note 3:** Tis may be used only for *non-sarcoma* histologies coded to this site. * Sarcomas do not present as in situ or noninvasive tumors


Pathologic T Pathologic T Display Description Registrar Notes
pX pTX Primary tumor cannot be assessed Pathologic classification criteria met, evaluation done:
Physician unable to assess T
Surgical resection of primary tumor, extension not stated
Tumor size (TS) unknown for T categories where TS needed to determine T
Physician assigns pTX, no other information available to determine T
p0 pT0 No evidence of primary tumor
p1 pT1 Tumor 15 mm or less in greatest dimension Confined to orbit
Localized, NOS

Stated as T1
p2 pT2 Tumor more than 15 mm in greatest dimension
WITHOUT invasion of globe or bony wall
Stated as T2
p3 pT3 Tumor of any size
WITH invasion of orbital tissues and/or bony walls
Stated as T3
p4 pT4 Tumor invades:
Globe or periorbital structure, such as
Temporal fossa
Nasal cavity
Paranasal sinuses
Central nervous system (CNS)

Further contiguous extension

Stated as T4
88 88 Not applicable Primary site/histology not TNM defined
In situ case but no pTis is defined by TNM
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)