Pathologic T

This input is used for staging


**Note 1:** Assign 88 for in situ cases (behavior code /2). TNM does not include an in situ category for GIST rectum tumors. **Note 2:** Ignore intraluminal extension to adjacent segment(s) of colon; code depth of invasion or extra-appendiceal spread as indicated. **Note 3:** Tumor size must be known to assign T. You may use a physician’s statement of the T category if this is the only information in the medical record. * If no size or category is specified, assign TX **Note 4:** Assign the appropriate T category based on the tumor size for the following descriptions **All sites** Invasive tumor in polyp, NOS Tumor confined to muscular wall Tumor invades through submucosa and muscularis mucosae to involve mucosa Extension through wall, NOS Intraluminal extension to rectosigmoid (rectum only) Intraluminal extension to anus (rectum only) Invasion through muscularis propria or muscularis, NOS Invasion of/through serosa (mesothelium) (visceral peritoneum) Invasion of/through serosa with invasion of/through mucosa Non-peritonealized pericolic tissues invaded Perimuscular tissue invaded Subserosal tissue/(sub)serosal fat invaded Transmural, NOS Wall, NOS Confined to rectosigmoid Confined to rectum Localized, NOS **All sites** Adherent to liver capsule Adherent to other organs or structures, NOS Bladder Cul de sac (rectouterine pouch) Fat, NOS Other segments of colon via serosa Ovary(ies) Pelvic wall Perirectal fat Prostate Skeletal muscles of pelvic floor Uterus Vagina **Rectosigmoid (C199)** Colon via serosa Fallopian tube(s) Mesentery (including mesenteric fat, mesocolon) Pericolic fat Pelvic plexuses Small intestine Ureter(s) **Rectum (C209)** Anus (excluding intraluminal extension) Bone(s) of pelvis Colon Ductus deferens Perineum, perianal skin Rectovaginal septum Rectovesical fascia for males only Sacral plexus Sacrum Seminal vesicle(s) Urethra


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
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 but not more than 10 cm in greatest dimension Stated as T3
p4 pT4 Tumor more than 10 cm in greatest dimension Stated as T4
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)