Pathologic T
This input is used for staging
Notes
**Note 1:** Code the tumor with the greatest extension when there are multiple simultaneous tumors. **Note 2:** Skin ulceration does not alter the T category. **Note 3:** In-transit metastasis is coded in N (regional lymph nodes). **Note 4:** Tumor size must be known to assign a value of T1, T2 or T3. You may use a physician’s statement of the T category if this is the only information in the medical record. * If the tumor appears to be in the T1, T2 or T3 categories, but no size or category is specified, assign TX **Note 5:** For the following descriptions, assign the appropriate T category (T1, T2 or T3) based on the tumor size. Lesion(s) confirmed to dermis Localized, NOS Subcutaneous tissue (through entire dermis)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 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 | |
| pIS | pTis | Carcinoma in situ | Intraepidermal, intraepithelial, noninvasive Stated as Tis |
| p1 | pT1 | Tumor 2 cm or less in greatest dimension | Stated as T1 |
| p2 | pT2 | Tumor more than 2 cm but not more than 5 cm in greatest dimension |
Stated as T2 |
| p3 | pT3 | Tumor more than 5 cm in greatest dimension | Stated as T3 |
| p4 | pT4 | Tumor invades deep extradermal structures, i.e., cartilage, skeletal muscle, fascia, or bone |
Fascia Underlying cartilage, bone, skeletal muscle Further contiguous extension Stated as T4 |
| 88 | 88 | Not applicable | 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) |