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 NET ampulla tumors. **Note 2:** 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, assign TX **Note 3:** Assign the appropriate T category (T1, T2) based on the tumor size for the following descriptions Invasive tumor confined/limited to ampulla of Vater or extending to sphincter of Oddi Duodenal wall Confined to ampulla, NOS 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 invades lamina propria or submucosa and is no greater than 1 cm in size | Stated as T1 |
| p2 | pT2 | Tumor invades muscularis propria or is greater than 1 cm in size | Stated as T2 |
| p3 | pT3 | Jejunal or ileal tumor invades subserosa Ampullary or duodenal tumor invades pancreas or retroperitoneum |
Peripancreatic soft tissues Stated as T3 |
| p4 | pT4 | Tumor perforates visceral peritoneum (serosa) or invades other organs or adjacent structures | Common bile duct Extrahepatic bile ducts other than common bile duct or sphincter of Oddi Extension to other adjacent organs or tissues: Blood vessels (major): Hepatic artery Portal vein Gallbladder Hepatic flexure Lesser omentum Liver including porta hepatis Stomach Transverse colon Further contiguous extension 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) |