Pathologic T
This input is used for staging
Notes
**Note 1:** Assign 88 for in situ cases (behavior code /2). TNM does not include an in situ category for iris tumors. **Note 2:** Ciliary body and Iris are both included in the ICD-O-3 site code of C694, but they are staged with different criteria by TNM. * The Schema Discriminator is used to select the schema appropriate for coding extension for melanoma of the iris **Note 3:** Melanomas of the uvea arise most commonly in the choroid, less frequently in the ciliary body, and least often in the iris. Melanomas of the iris tend to be small, and those arising from or extending to the ciliary body typically are large. **Note 4:** Iris melanomas originate from, and are predominantly located in, this region of the uvea. If less than one-half of the tumor volume is located within the iris, the tumor may have originated in the ciliary body and evaluation should be given to classifying it accordingly. (1)NAACCR Item
NAACCR #880| 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 Physician assigns pTX, no other information available to determine T |
| p0 | pT0 | No evidence of primary tumor | |
| p1 | pT1 | Tumor limited to iris | Note: T1 has subcategories of T1a, T1b and T1c. Assign T1 only when there is no information available to assign one of the subcategories Localized, NOS Stated as T1 [NOS] |
| p1A | pT1a | Not more than 3 clock hours in size | Limited to iris not more than 3 clock hours in size WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma Stated as T1a |
| p1B | pT1b | More than 3 clock hours in size | Limited to iris more than 3 clock hours in size WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma Stated as T1b |
| p1C | pT1c | WITH secondary glaucoma | Limited to iris WITH melanomalytic (secondary) glaucoma Stated as T1c |
| p2 | pT2 | Tumor confluent WITH or extending into: Ciliary body, choroid or both |
Tumor confluent with or extending into the ciliary body and/or choroid WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma Stated as T2 [NOS] |
| p2A | pT2a | WITH secondary glaucoma | Tumor confluent with or extending into the ciliary body and/or choroid WITH melanomalytic (secondary) glaucoma Stated as T2a |
| p3 | pT3 | Tumor confluent WITH or extending into: Ciliary body, choroid or both, WITH scleral extension |
Tumor confluent with or extending into the ciliary body and/or choroid WITH scleral extension WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma Stated as T3 [NOS] |
| p3A | pT3a | With secondary glaucoma | Tumor confluent with or extending into the ciliarybody and/or choroid WITH scleral extension WITH melanomalytic (secondary) glaucoma Stated as T3a |
| p4 | pT4 | Tumor extrascleral extension | Note: T4 has subcategories of T4a and T4b. Assign T4 only when there is no information available to assign one of the subcategories Extrascleral (extraocular) extension, measurement of diameter not specified Stated as T4 [NOS] |
| p4A | pT4a | Less than or equal to 5 mm in diameter | Tumor with extrascleral (extraocular) extension less than or equal to 5 mm in diameter Stated as T4a |
| p4B | pT4b | More than 5 mm in diameter | Tumor with extrascleral (extraocular) extension greater than 5 mm in diameter Further contiguous extension Stated as T4b |
| 88 | 88 | Not applicable | 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) |