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 T4

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
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)
\# T3 [NOS] is not defined in AJCC 7th edition