Clinical 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 #940
Clinical T Clinical T Display Description Registrar Notes
cX cTX Primary tumor cannot be assessed Clinical classification criteria met, evaluation done:
Physician unable to assess T
Extension cannot be determined
Tumor size (TS) unknown for T categories where TS needed to determine T
Physician assigns cTX, no other information available to determine T
c0 cT0 No evidence of primary tumor
c1 cT1 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
c2 cT2 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
c3 cT3 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]
c3A cT3a Multiple tumors any more than 5 cm Stated as T3a
c3B cT3b 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
c4 cT4 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 Clinical classification criteria not met
Clinical classification criteria met, evaluation done:
No information about diagnostic workup
Results not documented in record
Clinical evaluation of primary tumor not done or unknown if done
Tumor first detected on surgical resection (no clinical workup)
Evidence of metastatic disease [(cM1) or (pM1)], no other workup
Only Clinical Stage Group documented (no T, N, or M information available)
\# T3 [NOS] is not defined in AJCC 7th edition