Pathologic T
This input is used for staging
Notes
**Note 1:** The cystic duct extends from the neck of the gallbladder to its junction with the common hepatic duct, to form the common bile duct. **Note 2:** Involvement of one of the stated extrahepatic organs or structures is classified as T3, and involvement of more than one extrahepatic structure is classified as T4. **Note 3:** Involvement within the porta hepatis is coded according to the structures involved: portal vein, common hepatic artery, and common hepatic duct.NAACCR 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 Physician assigns pTX, no other information available to determine T |
| p0 | pT0 | No evidence of primary tumor | |
| pIS | pTis | Carcinoma in situ | Intraepithelial, noninvasive Stated as Tis |
| p1 | pT1 | Tumor invades lamina propria or muscular layer | Note: T1 has subcategories of T1a and T1b. Assign T1 only when there is no information available to assign one of the subcategories Confined to cystic duct, NOS Localized, NOS Stated as T1 |
| p1A | pT1a | Tumor invades lamina propria | Invasive tumor confined to: Mucosa, NOS Submucosa (superficial invasion) Extension to any of the tissue listed above plus involvement of the gallbladder Stated as T1a |
| p1B | pT1b | Tumor invades muscular layer | Muscularis propria Extension to muscularis propria plus any involvement of the gallbladder Stated as T1b |
| p2 | pT2 | Tumor invades perimuscular connective tissue; no extension beyond serosa or into liver | Beyond wall of cystic duct Periductal/fibromuscular connective tissue Extension to structures listed above plus involvement of the gallbladder Stated as T2 |
| p3 | pT3 | Tumor perforates the serosa (visceral peritoneum) and/or directly involves the liver and/or one other adjacent organ or structure, such as: Stomach Duodenum Colon Pancreas Omentum Extrahepatic bile ducts |
Extension to: Extrahepatic bile ducts (including common hepatic duct) (beyond cystic duct) WITH or WITHOUT extension beyond wall of cystic duct Liver WITH or WITHOUT extension to extrahepatic bile ducts (including common hepatic duct) (beyond cystic duct) Serosa (visceral peritoneum) perforated Extension to ONE of the following WITH or WITHOUT extension to liver: Unilateral branches of hepatic artery (right or left) Unilateral branches of portal vein (right or left) Stated as T3 |
| p4 | pT4 | Tumor invades main portal vein or hepatic artery or invades two or more extrahepatic organs or structures | Abdominal wall Common hepatic artery 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 | 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) |