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 liver tumors. **Note 2:** Assign T2 or T3 based on the tumor size for the following descriptions Multiple (satellite) nodules/tumors (one lobe) WITH or WITHOUT intrahepatic vascular invasion, including vascular invasion not stated WITH extension to gallbladder WITH or WITHOUT intrahepatic vascular invasion Multiple (satellite) nodules/tumors in more than one lobe of liver or on surface of parenchyma Satellite nodules, NOS **Note 3:** Major vascular invasion (T3b) is defined as invasion of the branches of the main portal vein (right or left portal vein, not including sectoral or segmental branches) or as invasion of one or more of the three hepatic veins (right, middle, or left). * Invasion of hepatic artery or vena cava is coded to T4NAACCR 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 | Solitary tumor without vascular invasion | Single lesion (one lobe) WITHOUT intrahepatic vascular invasion, including vascular invasion not stated More than one lobe involved by contiguous growth (single lesion) WITHOUT intrahepatic vascular invasion, including vascular invasion not stated Single lesion WITH involvement of one or more lobes of liver or extension within liver not stated WITH extension to gallbladder WITHOUT vascular invasion, including vascular invasion not stated Confined to liver, NOS Localized, NOS Stated as T1 |
| p2 | pT2 | Solitary tumor with vascular invasion or multiple tumors, none more than 5 cm in greatest dimension |
Single lesion (one lobe ) WITH intrahepatic vascular invasion More than one lobe involved by contiguous growth (single lesion) WITH vascular invasion Single lesion WITH involvement of one or more lobes of liver or extension within liver not stated WITH extension to gallbladder WITH intrahepatic vascular invasion Stated as T2 |
| p3 | pT3 | Multiple tumors any more than 5 cm or tumor involving a major branch of the portal or hepatic vein(s)# |
Note: T3 has subcategories of T3a and T3b. Assign T3 only when there is no information available to assign one of the subcategories Stated as T3 [NOS] |
| p3A | pT3a | Multiple tumors any more than 5 cm | Stated as T3a |
| p3B | pT3b | Tumor involving a major branch of the portal or hepatic vein(s) | Single tumor (confined to one lobe) or multiple tumor(s) (confined to one lobe and not on surface of liver) WITH major vascular invasion: major branch(es) of portal or hepatic vein(s) Single or multiple tumor(s) with major vascular invasion: major branch(es) of portal or hepatic vein(s) plus multiple nodules/tumors in more than one lobe of liver or on surface of parenchyma Stated as T3b |
| p4 | pT4 | Tumor(s) with direct invasion of adjacent organs other then the gallbladder or with perforation of visceral peritoneum |
Direct extension/perforation of visceral peritoneum Extrahepatic bile ducts Extension to hepatic artery or vena cava Diaphragm Lesser omentum Ligament(s): Coronary Falciform Hepatoduodenal Hepatogastric Round (of liver) Triangular Parietal peritoneum Further contiguous extension: Pancreas Pleura Stomach Other contiguous extension Stated as T4 |
| 88 | 88 | Not applicable | Primary site/histology not TNM defined 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) |