Pathologic T
This input is used for staging
Notes
**Note 1:** Assign 88 for in situ cases (behavior code /2). TNM does not include an in situ category for GIST appendix 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 Invasive tumor in polyp, NOS Tumor confined to muscular wall Tumor invades through submucosa and muscularis mucosae to involve mucosa Extension through wall, NOS Fat, NOS Invasion of/through serosa (mesothelium) (visceral peritoneum) Invasion of/through serosa with invasion of/through mucosa Invasion through muscularis propria or muscularis, NOS Non-peritonealized pericolic tissues invaded Perimuscular tissue invaded Subserosal tissue/(sub)serosal fat invaded Transmural, NOS Wall, NOS Extension to Adjacent tissue(s), NOS Connective tissue Mesenteric fat Mesentery Mesoappendix Pericolic fat Adherent to other organs or structures, NOS Abdominal Adrenal (suprarenal) gland Bladder Diaphragm Fallopian tube Fistula to skin Gallbladder Greater omentum Liver capsule Other segment(s) of colon via serosa Ovary Retroperitoneum (excluding fat) Small intestine Uterus Other contiguous extension including Kidney Liver Ureter Confined to appendix Localized, NOSNAACCR 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 | |
| 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) |