Clinical T

This input is used for staging


**Note 1:** High-grade squamous intraepithelial lesions (HSIL) and anal intraepithelial neoplasia (AIN) grade II-III are not normally collected by cancer registries. * AIN II-III or AIN III is reportable to standard-setters (except the Commission on Cancer) * Assign pTis if your registry collects these tumors **Note 2:** 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 3:** Assign the appropriate T category (T1, T2, or T3) based on the tumor size for the following descriptions Invasive tumor confined to mucosa, NOS (including intramucosal, NOS) Invades Lamina propria Muscularis mucosae Submucosa (superficial invasion) Muscularis propria (internal sphincter) Ischiorectal fat/tissue Perianal skin Perirectal skin Rectal mucosa or submucosa Rectal wall Skeletal muscle(s) Anal sphincter (external) Levator ani Subcutaneous perianal tissue Confined to anus Localized, NOS **Note 4:** Code incidental finding of malignancy in hemorrhoid according to greatest extension of tumor into wall of anus. * Assign T1 for localized, NOS if extension not specified **Note 5:** Assign T4 for contiguous extension from the site of origin. Discontinuous involvement is assigned in M (distant metastasis).


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
Bowen disease
High-grade Squamous Intraepithelial Lesion (HSIL)
Anal Intraepithelial Neoplasia II-III (AIN II-III)
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 of any size invades adjacent organ(s),
e.g., vagina, urethra, bladder
Adjacent organs:
Broad ligament(s)
Cervix uteri
Corpus uteri
Pelvic peritoneum

Further contiguous extension

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)