| Primary Tumor (T) | |
| Regional Lymph Nodes (N) | |
| Distant Metastasis (M) | |
This view displays the TNM formula. Please select appropriate value from the list for T/N/M variables. The result will be displayed, based on your selection of variables.
Definition of Primary Tumor (T)
| T Category | T Criteria |
|---|---|
| TX | Primary tumor cannot be assessed |
| T0 | No evidence of primary tumor |
| T1 | Solitary tumor less than or equal to 2 cm, or greater than 2 cm without vascular invasion |
| T1a | Solitary tumor less than or equal to 2 cm |
| T1b | Solitary tumor greater than 2 cm without vascular invasion |
| T2 | Solitary tumor greater than 2 cm with vascular invasion, or multiple tumors, none greater than 5 cm |
| T3 | Multiple tumors, at least one of which is greater than 5 cm |
| T4 | Single tumor or multiple tumors of any size involving a major branch of the portal vein or hepatic vein, or tumor(s) with direct invasion of adjacent organs other than the gallbladder or with perforation of visceral peritoneum |
Definition of Regional Lymph Node (N)
| N Category | N Criteria |
|---|---|
| NX | Regional lymph nodes cannot be assessed |
| N0 | No regional lymph node metastasis |
| N1 | Regional lymph node metastasis |
Definition of Distant Metastasis (M)
| M Category | M Criteria |
|---|---|
| M0 | No distant metastasis |
| M1 | Distant metastasis |