Clinical T
This input is used for staging
Notes
**Note 1:** T1 for cutaneous squamous cell carcinomas with one or no high-risk features is based on tumor size. * If there are no high risk features and tumor size is unknown, assign TX **Note 2:** T1 and T2 categories are based on size and high risk features and not depth of invasion or extension. * TNM includes a T3 category for head and neck skin primaries only **Note 3:** Tumor size must be known to assign a value of T1 or T2. 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 or T2 categories, but no size or category is specified and there are no known high risk features, assign TX **Note 4:** Assign the appropriate T category (T1, T2) based on the tumor size for the following descriptions Adjacent connective tissue excluding skeletal muscle Confined to scrotum Skeletal muscle Subcutaneous tissue Underlying cartilage Adjacent organs/structures Male genital organs Epididymis Penis Prostate Spermatic cord Testis Further contiguous extension Other organs and structures in male pelvis Bladder Rectum Urethra Confined to scrotum, NOS Localized, NOS **Note 5:** In the case of multiple simultaneous tumors, code the tumor with the greatest extension. **Note 6:** Skin ulceration does not alter the T category.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 Bowen disease |
| c1 | cT1 | Tumor 2 cm or less in greatest dimension WITH less than two-high risk features |
Stated as T1 |
| c2 | cT2 | Tumor more than 2 cm in greatest dimension OR WITH two or more high-risk features |
Stated as T2 |
| c4 | cT4 | Tumor with direct or perineural invasion of skull base or axial skeleton | Bone: Axial or appendicular skeleton Stated as T4 |
| 88 | 88 | Not applicable | Primary site/histology not TNM defined 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) |