Clinical 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 #940| Clinical T | Clinical T Display | Description | Registrar Notes |
|---|---|---|---|
| cX | cTX | Primary tumor cannot be assessed | Clinical classification criteria met, evaluation done: Physician unable to assess T Extension cannot be determined Tumor size (TS) unknown for T categories where TS needed to determine T Physician assigns cTX, no other information available to determine T |
| c0 | cT0 | No evidence of primary tumor | |
| pIS | pTis | Carcinoma in situ | Intraepidermal, intraepithelial, noninvasive Stated as Tis |
| c1 | cT1 | Tumor 2 cm or less in greatest dimension | Stated as T1 |
| c2 | cT2 | Tumor more than 2 cm but not more than 5 cm in greatest dimension |
Stated as T2 |
| c3 | cT3 | Tumor more than 5 cm in greatest dimension | Stated as T3 |
| c4 | cT4 | 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 | Clinical classification criteria not met Clinical classification criteria met, evaluation done: No information about diagnostic workup Results not documented in record Clinical evaluation of primary tumor not done or unknown if done Tumor first detected on surgical resection (no clinical workup) Evidence of metastatic disease [(cM1) or (pM1)], no other workup Only Clinical Stage Group documented (no T, N, or M information available) |